DDoS attacks aren’t just a nuisance anymore – they’re a serious threat to online businesses, large and small. If your website or app goes down, even for a few minutes, that’s potential customers lost and trust damaged. In the UK, there’s no shortage of cybersecurity firms offering protection, but not all of them are built the same. Let’s take a look at some of the top DDoS protection companies operating in the UK right now – the ones actually worth your time and investment.
1. A-listware
We approach DDoS protection and cybersecurity as part of a broader IT strategy that supports stability, performance, and adaptability. Our teams are built with flexibility in mind, which means we’re ready to respond to disruptions, including DDoS attacks, in ways that align with how each business actually runs. Working with clients of various sizes across sectors like finance, logistics, and healthcare, we’ve developed a practical understanding of how to keep systems online, especially when they’re under pressure.
Through custom engineering teams, managed services, and adaptable delivery models, we help companies put the right tech and people in place to prepare for and respond to security threats. Our services aren’t just about setting up protection – they’re also about integrating DDoS mitigation with infrastructure, analytics, and support systems already in use. This lets our clients keep moving forward, even in the middle of unexpected challenges.
Key Highlights:
- Focus on building dedicated engineering teams tailored to long-term needs
- Flexible delivery models including Agile, Time and Material, and KPI-based approaches
- Option to integrate protection with full application lifecycle services
- Experience working with both startups and established enterprises
- Distributed engineering support for faster response and issue resolution
Services:
- Cybersecurity and DDoS protection
- Managed IT services and IT support
- Application and infrastructure services
- Web and mobile development
- Data analytics and digital transformation
- IT consulting and outsourcing
- UI/UX design and testing
- Industry-specific software solutions (e.g. eLearning, logistics, healthcare)
Contact Information:
- Website: a-listware.com
- Phone: +44 (0)142 439 01 40
- Email: info@a-listware.com
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- LinkedIn: www.linkedin.com/company/a-listware
- Facebook: www.facebook.com/alistware
2. BT Business
BT Business provides a wide range of digital and connectivity solutions to companies across the UK, including tools to mitigate DDoS attacks. Their approach to cybersecurity integrates protection directly into the infrastructure and cloud environments their customers already rely on. This setup makes it easier for businesses to manage threats without overcomplicating their network or introducing too many new tools. Their DDoS mitigation is part of a larger managed security suite, supported by in-house experts who monitor network activity around the clock.
Their offering is structured to cover organisations of all sizes, from small businesses to large corporations and public sector bodies. By maintaining their own infrastructure and offering services like cloud hosting, dedicated internet access, and managed firewalls, they reduce the need for companies to rely on external systems. Their cybersecurity tools, including DDoS protection, sit alongside their broader networking and cloud platforms, making it simpler for users to manage everything in one place with consistent support.
Key Highlights:
- Offers DDoS protection as part of a wider managed security suite
- 24/7 UK-based support and monitoring
- Focuses on integration with BT’s broadband and cloud infrastructure
- Coverage spans SMEs, corporates, and the public sector
- Backed by an internal team of cybersecurity professionals
Services:
- DDoS protection and threat detection
- Managed firewall and cloud security
- Business broadband and leased line connectivity
- Voice and mobile solutions
- Cloud collaboration tools
- IoT and smart infrastructure support
- Network and data center services
Contact Information:
- Website: business.bt.com
- Twitter: x.com/BTBusiness
- LinkedIn: www.linkedin.com/showcase/bt-business
- Instagram: www.instagram.com/btforbusiness
- Address: 1 Braham Street London E1 8EE, UK
- Phone: 0800 800 150
3. Redcentric
Redcentric delivers managed IT and security services across the UK, with dedicated solutions designed to help organisations protect their digital infrastructure. Their DDoS protection service is built into their broader security and connectivity portfolio, making it a practical choice for companies looking to consolidate their IT and cybersecurity functions. They operate their own network and Tier 3 data centers, which gives them more control over how threats are handled and contained.
They work with a variety of sectors, including healthcare, education, and government, tailoring their services to fit both technical and compliance requirements. Their approach is focused on flexibility and support, with 24/7 security monitoring and service management handled by UK-based teams. Redcentric also integrates DDoS protection into wider managed cloud, network, and communication offerings, allowing customers to scale securely without rebuilding their systems from scratch.
Key Highlights:
- UK-based operations with multiple data centers
- DDoS protection embedded within managed service offerings
- Works across public and private sectors
- Centralised control through in-house platforms and support teams
- Focus on compliance and secure connectivity
Services:
- DDoS protection and managed network security
- Cloud infrastructure and hosting
- Unified communications and collaboration tools
- Public sector network integration
- IT consulting and professional services
- Disaster recovery and business continuity solutions
Contact Information:
- Website: www.redcentricplc.com
- E-mail: sayhello@redcentricplc.com
- Twitter: x.com/redcentricplc
- LinkedIn: www.linkedin.com/company/redcentric
- Address: Lifeline House 80 Clifton Street London EC2A 4HB, UK
- Phone: 0203 040 5070
4. M247
M247 offers DDoS protection as part of a broader set of cybersecurity and hosting solutions. Their focus is on providing reliable infrastructure for businesses that need high availability and secure performance. DDoS mitigation is handled through managed services, often combined with virtual firewalls and network monitoring, so customers can detect and respond to threats without managing it all in-house. Their setup is well suited to businesses that require always-on connectivity and uptime.
Their infrastructure is spread across global locations, but their services cater strongly to UK clients through local data centers and support. They provide hosting, colocation, and cloud platforms, which are often paired with cybersecurity tools like backup, disaster recovery, and DDoS protection. This setup helps businesses stay secure without sacrificing flexibility or control. Their support teams are available 24/7, which is key when time matters during active threats.
Key Highlights:
- Managed DDoS protection with 24/7 monitoring
- Infrastructure and hosting paired with built-in security tools
- Global reach with local support for UK businesses
- Offers private, public, and hybrid cloud solutions
- Uptime-focused with proactive network checks
Services:
- DDoS protection and firewall management
- Cloud hosting and object storage
- Dedicated and GPU servers
- Colocation services
- VPN and IP transit
- Disaster recovery and backup solutions
- Global connectivity and support
Contact Information:
- Website: www.m247global.com
- E-mail: support@m247global.com
- Facebook: www.facebook.com/M247Global
- LinkedIn: www.linkedin.com/company/m247-global
- Address: Turing House, Archway 5, Manchester, M15 5RL, United Kingdom
- Phone: +4 031 080 07 00
5. Corero
Corero delivers DDoS protection technology designed to integrate into existing business infrastructure. Their core solution, SmartWall ONE, is purpose-built to defend against complex and high-frequency DDoS attacks. They combine automated threat detection with real-time mitigation to protect networks before disruptions escalate. Corero also offers a range of supporting services, including predictive intelligence, geo-traffic control, and managed response, all developed around the idea of reducing overhead and improving response time.
They work with companies looking to either fully manage their DDoS protection in-house or outsource it as a managed service. Deployment options are flexible and include on-premises, hybrid, and cloud-based models, giving customers control over how and where protection is applied. Corero’s setup supports edge mitigation, inline filtering, and traffic scrubbing, all managed through a unified platform. Their service aims to minimize downtime while maintaining network performance across various environments.
Key Highlights:
- Real-time DDoS mitigation through SmartWall ONE
- Supports hybrid, cloud, and on-premises deployment models
- Offers proactive intelligence and traffic control features
- 24/7 access to dedicated DDoS support teams
- Flexible service models including managed options
Services:
- DDoS protection and mitigation
- Predictive threat intelligence
- Geo and ASN-based traffic filtering
- Fully managed SecureWatch service
- Inline, edge, and scrubbing mitigation techniques
- SaaS-based observability and security platform (CORE)
Contact Information:
- Website: www.corero.com
- E-mail: info_UK@www.corero.com
- Twitter: x.com/corero
- LinkedIn: www.linkedin.com/company/corero
- Address: Salisbury House, 29 Finsbury Circus, London EC2M 5QQ, UK
- Phone: +1 978 212 1500
6. Storm Internet
Storm Internet offers scalable DDoS protection as part of their managed hosting and cloud infrastructure services. Their protection tools are built into the Storm Security Centre, where users can activate standard defenses or customize additional filters based on traffic needs. The platform is designed for simplicity, aiming to protect websites and servers from common disruption patterns with minimal manual intervention.
They provide DDoS defense alongside related services like Web Application Firewall (WAF), access controls, and proactive monitoring. The system automatically detects attacks and works to keep sites online without needing constant oversight. With support teams available around the clock, Storm focuses on delivering consistent protection across various hosting environments, whether customers are running public, private, or hybrid cloud setups.
Key Highlights:
- Integrated DDoS protection for hosting environments
- Simple management through Storm Security Centre
- Custom protection settings available on demand
- Always-on detection and mitigation tools
- Support for cloud and application hosting clients
Services:
- DDoS protection and mitigation
- Web Application Firewall (WAF)
- Managed cloud hosting (public and private)
- Backup and disaster recovery
- Infrastructure and application hosting
- 24/7 support and monitoring
Contact Information:
- Website: www.storminternet.co.uk
- E-mail: abuse@storminternet.co.uk
- Twitter: x.com/storminternet
- LinkedIn: www.linkedin.com/company/storminternet
- Address: 1 Canal View, Wharf Farm, Eynsham Road, Witney, Oxfordshire. OX29 4DB, UK
- Phone: 0800 817 4727
7. Wavenet
Wavenet includes DDoS protection as part of its broader managed cybersecurity and IT services. Their protection tools are delivered within a managed environment that also covers firewalls, detection and response, and network security. The company works with sectors like healthcare, education, and legal services, offering tailored setups depending on risk profiles and operational needs. DDoS defense is part of a layered approach that also includes endpoint monitoring and access control.
The technical side is handled by Wavenet’s in-house teams, who provide 24/7 monitoring through managed SOC and detection services. They offer infrastructure management, cloud integration, and hybrid workplace tools that include protection against service disruptions. Rather than focusing on standalone products, Wavenet builds DDoS protection into full-service IT support plans that help organizations cover security, connectivity, and continuity all at once.
Key Highlights:
- DDoS protection embedded in managed security services
- In-house support and detection teams
- Works across sectors including healthcare and education
- Combines infrastructure and cloud support with security layers
- Uses a blend of automation and managed response
Services:
- DDoS mitigation and firewall management
- Managed SOC and detection services
- Hybrid cloud management
- Connectivity and unified communications
- Endpoint protection and IT support
- Device lifecycle and recovery services
Contact Information:
- Website: www.wavenet.co.uk
- E-mail: contact@wavenet.co.uk
- Twitter: x.com/WavenetUK
- LinkedIn: www.linkedin.com/company/wavenet_2
- Address: One Central Boulevard Blythe Valley Park Solihull West Midlands B90 8BG, UK
- Phone: 0333 234 0011
8. Nomios
Nomios provides managed security services and infrastructure support for UK businesses looking to reduce complexity in their IT environments. Their security operations center (SOC) delivers continuous monitoring and incident response across multi-vendor networks, with options for managed firewall, SIEM, and MDR services. DDoS protection is offered as part of their broader support for network security, helping businesses strengthen availability and resilience without adding internal load.
Their technical assistance and service desk operate 24/7, offering UK-based support that works alongside in-house teams or fully manages infrastructure depending on need. They focus on flexible service levels and escalation paths, which is useful for businesses needing tailored agreements. Their capabilities span day-to-day operations, threat management, and project-based services, giving companies the ability to scale security coverage without reshuffling their core setup.
Key Highlights:
- Operates a dedicated UK-based SOC for continuous threat monitoring
- DDoS protection integrated with managed firewall and SIEM
- Service desk and technical support available 24×7
- Multi-vendor support with escalation to third-line vendors
- Offers both operational and consultative security services
Services:
- DDoS protection and threat detection
- Managed firewall and SIEM
- Extended detection and response (XDR)
- Technical assistance and lifecycle management
- Security consulting and compliance support
- Infrastructure design, deployment, and integration
Contact Information:
- Website: www.nomios.co.uk
- Facebook: www.facebook.com/NomiosGroup
- Twitter: x.com/nomiosgroup
- LinkedIn: www.linkedin.com/company/nomios-uk-i
- Address: 2 Elmwood, Chineham Park RG24 8WG Basingstoke United Kingdom
- Phone: +44 (0)1256 805225
9. Radware
Radware delivers DDoS protection through a mix of cloud-based tools and on-premise technologies. They support customers across industries by offering automated mitigation, API and application-layer defense, and traffic analytics. Their cloud DDoS service is built for scalability and integrates with application protection tools, making it a fit for businesses with hybrid environments or public-facing digital assets.
What stands out in their approach is the focus on centralized visibility and AI-supported threat response. Their tools are designed to defend against evolving DDoS threats, including encrypted traffic and multi-vector attacks, with automatic correlation across platforms. Radware also provides professional services to help teams with implementation, tuning, and ongoing security strategy. This combination of technology and support is aimed at organisations that need continuous availability without manual tuning every time something breaks.
Key Highlights:
- Cloud DDoS protection combined with application-layer defense
- AI-driven automation for identifying and mitigating threats
- Tools to handle encrypted and multi-vector DDoS attacks
- Centralized analytics and monitoring dashboards
- Professional services for planning and deployment
Services:
- Cloud-based and on-prem DDoS protection
- Bot management and API security
- Web application firewall (WAF)
- Traffic analytics and reporting tools
- SSL inspection and application delivery
- Implementation support and resident engineering
Contact Information:
- Website: www.radware.com
- E-mail: info_uk@radware.com
- Facebook: www.facebook.com/Radware
- Twitter: x.com/radware
- LinkedIn: www.linkedin.com/company/radware
- Address: 5th Floor, Thames Tower, Station Road, Reading, Berkshire, England, RG1 1LX, UK
- Phone: +44 (0) 118 228 1447
10. Jisc
Jisc provides DDoS protection and cybersecurity services tailored to the education and research sectors in the UK. Their protection sits on top of the national Janet network, which connects universities, colleges, and research institutions. The setup includes automatic detection and mitigation of DDoS traffic, aimed at preventing outages or disruptions that affect academic systems and digital learning environments.
Their services extend beyond just blocking attacks. They also offer training, guidance, and security consulting to help institutions improve their overall posture. DDoS protection is bundled with broader connectivity and data services, giving educational bodies a single structure for managing network availability and safety. With their community-based approach and sector-specific focus, Jisc supports a stable IT environment for teaching, research, and administration.
Key Highlights:
- DDoS mitigation delivered through the Janet network
- Services tailored to UK education and research organisations
- Provides guidance and training alongside technical services
- Works with universities, colleges, and public bodies
- Focus on digital resilience in learning environments
Services:
- DDoS protection and mitigation
- Network monitoring and incident response
- Cybersecurity consultancy and training
- Secure connectivity and infrastructure support
- Cloud service brokerage and management
- Data analytics and research support tools
Contact Information:
- Website: www.jisc.ac.uk
- E-mail: help@jisc.ac.uk
- Facebook: www.facebook.com/jiscsocial
- LinkedIn: www.linkedin.com/company/jisc
- Instagram: www.instagram.com/jiscsocial
- Address: 4 Portwall Lane Bristol BS1 6NB, UK
- Phone: 0300 300 2212
11. DDoS-Guard
DDoS-Guard offers a range of protection services covering websites, networks, and cloud infrastructure, with a focus on minimizing downtime caused by DDoS attacks. Their setup allows mitigation at multiple layers (L3 through L7), which helps handle both volume-based and application-level threats. They use their own global scrubbing infrastructure, which filters malicious traffic and ensures only clean data hits the client side.
Their service portfolio also includes protected hosting solutions such as VPS, VDS, and dedicated servers, all equipped with integrated DDoS defense. For users looking for more insight or control, they provide add-on modules like a Web Application Firewall (WAF) and bot mitigation. These tools can be adjusted through their client dashboard, making it easier to respond to specific security concerns without starting from scratch.
Key Highlights:
- Covers protection from L3 to L7 OSI layers
- Owns and operates global scrubbing network infrastructure
- Add-on tools like bot filtering and WAF available
- Offers secure hosting services bundled with protection
- Provides live traffic analytics and client control panel
Services:
- DDoS protection for websites and networks
- VPS, VDS, and dedicated server hosting
- Bot mitigation and Web Application Firewall (WAF)
- CDN and traffic acceleration
- Security audits and infrastructure analysis
- Custom configuration support
Contact Information:
- Website: ddos-guard.net
- E-mail: info@ddos-guard.net
- LinkedIn: www.linkedin.com/company/ddos-guard
- Address: 122, Building 3, Dubai Internet City, Dubai, United Arab Emirates
- Phone: +55 613 550-74-40
12. Akamai
Akamai delivers infrastructure and application-level DDoS protection through a globally distributed edge network. Their Prolexic platform defends against high-volume and complex attacks, helping customers protect web services, APIs, and DNS infrastructure. What sets them apart is the depth of integration across their product lines, with bot management, WAF, and DNS security all available as part of a unified system.
They also offer Zero Trust access controls and application security tools tailored for hybrid and cloud environments. Their services are often used by enterprises with distributed systems or multi-cloud strategies. Akamai combines automated response with real-time intelligence from its global traffic network, enabling fast mitigation without forcing teams to manage the process manually every time a threat shows up.
Key Highlights:
- DDoS protection through the Prolexic platform
- Security services tied to a global edge delivery network
- Strong focus on web, DNS, and API protection
- Advanced bot filtering and traffic segmentation tools
- Built-in threat intelligence and analytics
Services:
- Cloud and hybrid DDoS protection
- Web application and API security
- DNS infrastructure defense
- Bot detection and abuse prevention
- Zero Trust access and identity controls
- Secure content and app delivery services
Contact Information:
- Website: www.akamai.com
- Facebook: www.facebook.com/AkamaiTechnologies
- Twitter: x.com/Akamai
- LinkedIn: www.linkedin.com/company/akamai-technologies
- Address: 7 Air St, 2nd Floor Soho, London W1B 5AD
- Phone: +44-1784225531
13. Fortinet
Fortinet provides a full stack of cybersecurity tools, with DDoS protection built into their network and cloud security products. Their solutions work across physical, virtual, and hybrid environments, supported by the FortiGuard Labs threat intelligence. The DDoS defense components integrate with firewalls, SD-WAN, and application gateways, making them part of a broader security strategy rather than isolated features.
Their approach includes AI-powered traffic analysis and automation to help identify and neutralize threats quickly. Fortinet’s tools are used by both large enterprises and mid-size organisations looking to centralize their infrastructure and security management. They also support operational technology (OT) networks, which is useful for companies dealing with mixed IT and industrial systems.
Key Highlights:
- DDoS mitigation integrated with firewalls and cloud tools
- Covers on-premise, virtual, and cloud-based deployments
- Uses threat intelligence from FortiGuard Labs
- Supports automation for fast detection and response
- Designed to fit both IT and operational technology environments
Services:
- Network and application-layer DDoS protection
- Secure SD-WAN and SASE integration
- Cloud and container security tools
- AI-driven traffic and behavior monitoring
- Endpoint and SOC platform support
- Access management and Zero Trust tools
Contact Information:
- Website: www.fortinet.com
- Facebook: www.facebook.com/Fortinet
- Twitter: x.com/Fortinet
- LinkedIn: www.linkedin.com/company/fortinet
- Instagram: www.instagram.com/fortinet
- Address: Ltd 26th Floor 52 Lime Street London EC3M 7AF, UK
- Phone: (+44) 020 81062600
14. IONOS Cloud
IONOS Cloud offers managed DDoS protection as part of its broader cloud infrastructure services. Their DDoS Protect solution is designed to guard against both high-volume and short-burst attacks that target hosted environments. The protection is always on and works in the background, automatically detecting and mitigating malicious traffic targeting IONOS-hosted services. This includes protection across virtual private servers (VPS), dedicated servers, and other infrastructure-as-a-service (IaaS) products.
The platform is geared toward businesses that want integrated protection without having to manage it directly. DDoS defenses are already deployed in their data centers, which makes it easier for customers to focus on their services while IONOS handles availability and mitigation in the backend. It’s part of a larger setup that includes cloud backup, object storage, managed Kubernetes, and other scalable hosting tools.
Key Highlights:
- Always-on protection for IONOS-hosted infrastructure
- Automated mitigation without user intervention
- Included across VPS, dedicated servers, and cloud platforms
- Integrated into their core network services
- Available in most IONOS data centers
Services:
- Managed DDoS protection for hosted environments
- Public and private cloud infrastructure
- VPS and dedicated server hosting
- Cloud backup and storage
- Managed Kubernetes and container services
- DNS and CDN tools for performance and resilience
Contact Information:
- Website: cloud.ionos.co.uk
- Facebook: www.facebook.com/my.ionos
- LinkedIn: www.linkedin.com/company/ionos
- Instagram: www.instagram.com/ionos.official
- Address: No.2 Cathedral Walk, The Forum, Gloucester GL1 1AU, United Kingdom
- Phone: 0333 336 2984
15. Nokia Deepfield
Nokia Deepfield Defender is a software-based DDoS security solution focused on large-scale networks, service providers, and digital platforms. It combines AI-driven analytics with real-time traffic monitoring to identify and mitigate attacks at the network level. The system uses telemetry data alongside Nokia’s Deepfield Secure Genome feed, which provides context on global internet threats to improve accuracy and reduce false positives.
The solution is designed to integrate directly with network infrastructure, including Nokia routers and mitigation hardware, but it also supports external scrubbing systems. Deepfield Defender automatically selects the most efficient strategy to block an active threat, depending on what’s available in the network. For service providers, there’s also a way to use this platform to offer managed DDoS protection services to their own customers, with flexible tiers and reporting tools.
Key Highlights:
- AI and ML-driven threat detection using traffic telemetry
- Integrates with routers and scrubbing systems for response
- Designed to scale with large or complex networks
- Real-time mitigation with no manual input needed
- Optional portal for managed security service providers
Services:
- Real-time DDoS attack detection and mitigation
- AI-enhanced anomaly detection and traffic modeling
- Integration with programmable routers and mitigation hardware
- Managed DDoS protection-as-a-service (DDoS-aaS)
- Custom reporting and customer portal features
- Network-wide threat monitoring and visualization
Contact Information:
- Website: www.nokia.com
- E-mail: press.services@nokia.com
- Facebook: www.facebook.com/nokia
- Twitter: x.com/nokia
- LinkedIn: www.linkedin.com/company/nokia
- Instagram: www.instagram.com/nokia
- Address: 740 Waterside Drive Aztec West Business Park Bristol BS32 4UF, UK
- Phone: +358 10 4484 900
Conclusion
Finding solid DDoS protection in the UK isn’t about chasing flashy marketing or defaulting to whoever shows up first in search results. It’s about knowing what kind of infrastructure you’re running, how much control you need, and who’s actually equipped to keep your systems steady when things get rough. The companies we looked at each bring something a little different to the table, some focus on tight integration with hosting environments, others on advanced traffic intelligence, and a few aim for scale and simplicity.
Ultimately, there’s no one-size-fits-all. What works for a fintech company with strict uptime needs might be overkill for a mid-sized e-commerce site, and vice versa. The important part is understanding how these services slot into your existing setup, what kind of visibility and support you get, and whether you’re just patching a hole or investing in long-term resilience. The good news is, if you’re in the UK, there are plenty of solid options that go beyond checkbox security and actually help you stay online when it counts.
