Let’s face it, most businesses today run on a patchwork of tools. CRMs, accounting platforms, cloud apps, custom software they’re all supposed to work together, but in reality, they often don’t. That’s where APIs come in. They’re the quiet middlemen making sure data flows where it should, without you having to manually copy-paste your way through the day.
In the UK, there’s a growing set of companies that do nothing but make this whole process painless. They take the jumble of systems you already rely on and stitch them together into something that actually feels like one ecosystem. In this guide, we’ll highlight some of the top firms leading the way, the kind of teams you call when you want your tech stack to stop fighting itself and start working for you.
1. A-Listware
At A-Listware, we focus on building software solutions and integrations that actually fit the way companies work. A lot of our projects are about connecting systems that weren’t designed to work together in the first place. Instead of leaving businesses with scattered tools and constant manual fixes, we put the effort into wiring things up so information flows properly in the background.
We work with UK clients who often come to us with a mix of legacy systems and modern platforms. Rather than pushing them to throw everything away and start again, we usually help adapt what they already have and tie it into newer tech. It’s a practical approach that saves hassle while keeping the tools reliable for everyday use.
נקודות עיקריות:
- We focus on system integration and custom software
- Experienced in connecting old setups with new platforms
- We keep things straightforward instead of overcomplicating
- Provide long-term support when it’s needed
- Work closely with UK clients on tailored projects
שירותים:
- אינטגרציה ופיתוח של API
- Custom software projects
- Web and mobile applications
- שדרוגי מערכות מדור קודם
- Cloud-based solutions
- תמיכה ותחזוקה שוטפים
Contact Info:
- אֲתַר אִינטֶרנֶט: a-listware.com
- אֶלֶקטרוֹנִי: info@a-listware.com
- פייסבוק: www.facebook.com/alistware
- לינקדאין: www.linkedin.com/company/a-listware
- כתובת: סנט ליאונרדס-און-סי, TN37 7TA, בריטניה
- מספר טלפון: 44 (0)142 439 01 40+
2. Ficode
Ficode is a UK-based software company that works on connecting systems and building custom solutions for businesses that need more than just off-the-shelf tools. Their approach is pretty straightforward: they focus on making different platforms talk to each other so data doesn’t get stuck in silos. Whether it’s tying together finance tools, CRM systems, or third-party services, they aim to cut out the manual work and keep operations running without constant patching.
Beyond integration, they also take on broader development projects. That includes building new applications from scratch or reworking older systems so they fit better with today’s workflows. They’re not limited to one sector either, which means they’ve had to adapt to different business needs instead of sticking to a single formula. The result is a mix of integration know-how and custom development that covers a wide range of use cases.
נקודות עיקריות:
- Focus on making platforms and tools connect smoothly
- Works on both new builds and system upgrades
- Experience across different industries
- Provides tailored development instead of generic solutions
שירותים:
- API integration and system connectivity
- פיתוח תוכנה בהתאמה אישית
- פיתוח אפליקציות אינטרנט ומובייל
- CRM and ERP integration
- פתרונות ענן ותמיכה במיגרציה
- Ongoing product maintenance
Contact Info:
- Website: www.ficode.com
- Email: sales@ficode.com
- Phone: +443337891189
- Address: Regus Business Centre Fort Dunlop Fort Pkwy, Birmingham, B24 9FD U.K.
- LinkedIn: www.linkedin.com/company/ficode-technologies-limited
- Twitter: x.com/ficodetech
- Facebook: www.facebook.com/FicodeTechnologies
- Instagram: www.instagram.com/ficodetechnologieslimited
3. APIGuy
APIGuy is a small UK company that pretty much lives and breathes APIs. Their work usually revolves around getting different systems to actually talk to each other without constant breakdowns. Instead of throwing in layers of shiny new tools, they take what a business already has and wire it up properly so the data flows the way it should. It’s not flashy work, but it’s the kind of stuff that keeps day-to-day operations from turning into a headache.
A lot of their jobs are about fixing what’s already there rather than starting from scratch. That might mean repairing broken connections, tightening up performance, or setting up new endpoints so systems stop tripping over each other. They also stick around when needed, making sure those integrations don’t fall apart the second something changes. Think of them as the people who make sure your tech stack plays nicely together in the background.
נקודות עיקריות:
- Specialises in practical API work
- Improves existing setups as much as building new ones
- Keeps things simple instead of overcomplicating them
- Offers support after the build is done
שירותים:
- API design and development
- System integration and connectivity
- Cloud and server-side APIs
- Troubleshooting and optimisation
- Ongoing monitoring and maintenance
Contact Info:
- Website: apiguy.co.uk
- Email: info@apiguy.co.uk
- Address: Oban Close Wakefield Leeds West Yorkshire UK WF3 1JU
- LinkedIn: www.linkedin.com/company/apiguy
- Twitter: x.com/APIGuy_UK
- Facebook: www.facebook.com/API-guy
4. i-Finity
i-Finity is a UK software company that spends a lot of its time building digital tools for businesses that need systems to actually work together. They don’t just drop in generic software and walk away. Instead, they look at how a business already runs and then create or connect the right tools to fit that setup. That often means designing custom applications or pulling together APIs so data isn’t stuck in separate silos.
They also take on the less glamorous jobs like modernising older systems and keeping them useful instead of forcing a full rebuild. A lot of their work is about making things easier behind the scenes so that teams can focus on the actual job rather than chasing down missing information. They stick with clients long enough to keep those systems updated too, which helps when things inevitably change over time.
נקודות עיקריות:
- Works on connecting platforms through API integration
- Builds custom software that fits into existing workflows
- Focus on modernising old systems instead of starting from scratch
- Provides ongoing support and updates
שירותים:
- אינטגרציה ופיתוח של API
- אפליקציות אינטרנט ומובייל מותאמות אישית
- CRM and ERP solutions
- Cloud-based platforms
- System modernisation and upgrades
- Long-term product maintenance and support
Contact Info:
- Website: www.i-finity.co.uk
- Email: hello@i-finity.co.uk
- Phone: 01904 652100
- Address: Blake House, 66 Bootham, York, YO30 7BZ UK
- LinkedIn: www.linkedin.com/company/i-finity
- Twitter: x.com/ifinityhq
- Instagram: www.instagram.com/ifinityhq
- Facebook: www.facebook.com/IFinityHQ
5. Cyber-Duck
Cyber-Duck is a UK digital agency that mixes design, development, and integration work under one roof. They’re often brought in when companies want their systems and platforms to feel less like a pile of separate tools and more like a joined-up setup. A lot of their work blends user experience with technical delivery, so the end result isn’t just functional but also something people actually want to use.
They don’t just build new platforms and walk away either. Cyber-Duck has been around long enough to know that most businesses already have a lot of moving parts. So instead of pushing for a complete rebuild every time, they often help modernise and connect what’s already there. That can mean tighter API integrations, new digital services, or simply making existing systems easier to manage.
נקודות עיקריות:
- Combines design, development, and integration work
- Focuses on user experience as much as technical delivery
- Works with both new projects and existing systems
- Helps companies connect platforms through APIs
שירותים:
- API integration and connectivity
- פיתוח אתרים ומובייל
- UX and service design
- Digital transformation projects
- Cloud and system modernisation
- Ongoing support and optimisation
Contact Info:
- Website: www.cyber-duck.co.uk
- Email: hello@cyber-duck.co.uk
- Phone: +44(0)2076026000
- Address: Kensington Village West Kensington London W14 8TS, United Kingdom
- LinkedIn: www.linkedin.com/company/cyber-duck
- Twitter: x.com/Cyberduck_uk
- Instagram: www.instagram.com/cyberduckuk
- Facebook: www.facebook.com/cyberducklondon
6. Dawn Creative
Dawn Creative is a company in the UK that focuses on design, branding, and digital work. They’re the kind of team that steps in when a business wants its visual identity and online presence to actually make sense together. Their projects usually involve building out brand identities, creating digital designs, and making sure the tech side doesn’t clash with the creative side.
They also do more than just logos or websites. A lot of their work is about tying the whole brand experience together across platforms, whether that’s through UX design, digital campaigns, or system integrations that keep the backend running smoothly. In short, they bridge that gap between how a business looks and how it works.
נקודות עיקריות:
- Focuses on branding and digital design
- Works on connecting creative and technical sides of projects
- Helps businesses keep consistency across platforms
- Handles both new projects and updates to existing setups
שירותים:
- Brand identity and design
- Digital and UX design
- Web development and integration
- Creative campaigns
- System and platform optimisation
- Ongoing design support
Contact Info:
- Website: www.dawncreative.co.uk
- Email: wakeup@dawncreative.co.uk
- Phone: 01617110910
- Address: 73a Hulme Hall Road, Cheadle Hulme, Stockport, Greater Manchester, SK8 6JZ UK
- LinkedIn: www.linkedin.com/company/dawn-creative
- Instagram: www.instagram.com/dawn_creative_agency
7. GoodCore
GoodCore is a UK software company that likes to step in when off-the-shelf tools just don’t cut it. They focus on building custom applications that actually fit the way a business works, instead of forcing teams to bend around someone else’s system. A big part of their job is making sure all the moving parts talk to each other properly, so data isn’t scattered in five different places and people aren’t stuck doing manual workarounds.
They don’t shy away from the messy stuff either. Plenty of their projects involve older systems that businesses still rely on but can’t quite get to play nicely with newer platforms. Rather than ripping everything out, GoodCore often gives those setups a tune-up and connects them to modern tools. It’s a mix of new builds, smart fixes, and keeping things running smoothly over time.
נקודות עיקריות:
- Builds custom software that matches real business workflows
- Connects systems through practical API integration
- Works with legacy setups instead of tossing them out
- Balances new projects with long-term support
שירותים:
- פיתוח תוכנה בהתאמה אישית
- עיצוב ואינטגרציה של API
- פיתוח אפליקציות אינטרנט ומובייל
- Legacy system modernisation
- Cloud-based platforms
- תמיכה ותחזוקה שוטפים
Contact Info:
- Website: www.goodcore.co.uk
- Email: contact@goodcore.co.uk
- Phone: 020 8781 6903
- Address: Airport House, Purley Way, Croydon CR0 0XZ UK
- LinkedIn: www.linkedin.com/company/goodcore-software
- Facebook: www.facebook.com/goodcoresoftware
8. Pulsion
Pulsion is a Glasgow-based software company that’s been around for a while, helping businesses sort out the tech they actually need. They spend a lot of time building custom applications and making sure existing systems don’t end up working against each other. Their projects usually fall somewhere between creating new tools from scratch and connecting up the platforms a business already relies on.
They’re also not afraid to get into the nitty-gritty of older systems. Instead of scrapping everything, they’ll often rework and modernise what’s there so it fits better with today’s tech. A lot of their work is about making life easier behind the scenes: cutting down on manual fixes, linking platforms properly, and keeping things stable once it’s all up and running.
נקודות עיקריות:
- Builds custom applications tailored to how businesses work
- Connects systems through practical API integration
- Handles legacy platforms and upgrades them where possible
- Balances new builds with long-term support
שירותים:
- פיתוח תוכנה בהתאמה אישית
- API integration and connectivity
- פיתוח אפליקציות מובייל ואינטרנט
- Legacy system modernisation
- Cloud-based solutions
- תמיכה ותחזוקה שוטפים
Contact Info:
- Website: www.pulsion.co.uk
- Email: info@pulsion.co.uk
- Phone: +44 (0)141 352 2280
- Address: 5 Eagle Street, Craighall Business Park, Glasgow, G4 9XA UK
- LinkedIn: www.linkedin.com/company/pulsion-technology
9. SoftData
SoftData is a UK company that spends its time building software and connecting systems that don’t naturally play nicely together. A lot of their work is about smoothing out the messy parts of business tech setups, whether that’s through custom applications or making sure different platforms can share data without someone stepping in to fix things manually every day.
They’re also used to dealing with older systems that are still important but don’t quite fit in with modern tools. Instead of telling a business to throw everything out, they’ll usually find ways to upgrade what’s there and hook it into newer platforms. It’s a mix of building fresh stuff, fixing old setups, and sticking around long enough to make sure things don’t fall apart once it’s all live.
נקודות עיקריות:
- Creates custom software to match how businesses actually work
- Connects platforms through practical integrations
- Works with older systems instead of scrapping them straight away
- Focuses on keeping things reliable and manageable
- Offers ongoing support when needed
שירותים:
- פיתוח תוכנה בהתאמה אישית
- API integration and system connectivity
- פיתוח אפליקציות אינטרנט ומובייל
- Legacy system modernisation
- Cloud-based solutions
- Long-term support and maintenance
Contact Info:
- Website: www.softdata.co.uk
- Email: admin@softdata.co.uk
- Phone: +441452502508
- Address: 1st Floor 80 Westgate Street, Gloucester GL1 2NZ UK
- LinkedIn: www.linkedin.com/company/softdata-internet-limited
- Twitter: x.com/SoftData
- Facebook: www.facebook.com/Softdata-Internet-Ltd
10. API Integration Ltd
API Integration Ltd is a UK company that pretty much does what it says on the tin. They focus on APIs and spend their time making sure different systems can actually talk to each other. Instead of businesses juggling a bunch of disconnected tools, they help stitch everything together so data moves where it should without someone constantly stepping in to fix things.
They also deal with situations where older setups are still hanging around but don’t quite fit in anymore. Rather than throwing everything out, they’ll often build or rework APIs so those systems can work with newer platforms. It’s less about adding flashy extras and more about making everyday processes run without drama.
נקודות עיקריות:
- Specialises in practical API connectivity
- Helps different tools and platforms work together
- Works with both new projects and legacy systems
- Focuses on keeping solutions simple and reliable
שירותים:
- אינטגרציה ופיתוח של API
- פתרונות תוכנה בהתאמה אישית
- שדרוגי מערכות מדור קודם
- Web and mobile app connectivity
- Cloud-based integration
- Long-term support and maintenance
Contact Info:
- Website: apiintegration.co.uk
- Email: info@apiintegration.co.uk
11. Cool Code Company
Cool Code Company is a UK team that spends most of its time building custom software and making sure systems can talk to each other. They deal with the kind of problems that show up when businesses run on a mix of tools that don’t naturally connect. Their job is basically to wire everything up so the data moves around properly and people don’t waste hours fixing things by hand.
They’re also used to working with older systems that companies still depend on. Instead of telling clients to scrap everything, they’ll usually adapt what’s already there and link it with newer platforms. It’s not about shiny extras or overcomplicated setups, just practical fixes that keep everyday operations ticking along without constant breakdowns.
נקודות עיקריות:
- Builds custom software around business needs
- Connects platforms that don’t normally work together
- Upgrades older systems instead of replacing them outright
- Keeps solutions simple and reliable
שירותים:
- עיצוב ואינטגרציה של API
- פיתוח תוכנה בהתאמה אישית
- שדרוגי מערכות מדור קודם
- פיתוח אפליקציות אינטרנט ומובייל
- Cloud-based connectivity
- תמיכה ותחזוקה שוטפים
Contact Info:
- Website: www.coolcodecompany.co.uk
- Email: hello@coolcodecompany.co.uk
- Phone: +441157722751
- Address: 11 Oak Street, Nottingham NG5 2AT UK
- LinkedIn: www.linkedin.com/company/cool-code-company
- Twitter: x.com/CoolCodeCompany
- Facebook: www.facebook.com/CoolCodeCompany
12. Spacetag
Spacetag is a UK company that builds software and sorts out integrations for businesses that don’t want to juggle a pile of disconnected tools. Their work is usually about making systems talk to each other properly, whether that means building something new from scratch or wiring up platforms that were never designed to work together. The end goal is pretty simple: cut down on manual fixes and make sure data moves where it needs to go.
They also deal with older systems that companies still depend on. Instead of pushing for a total rebuild, they’ll usually update what’s already there and connect it with modern platforms. It’s less about over-engineering and more about keeping things practical, so the tech stack stays useful without creating extra headaches.
נקודות עיקריות:
- Builds custom software tailored to business needs
- Connects tools and platforms that don’t naturally work together
- Updates older systems instead of replacing everything
- Keeps solutions straightforward and practical
שירותים:
- אינטגרציה ופיתוח של API
- Custom software projects
- פיתוח אפליקציות אינטרנט ומובייל
- שדרוגי מערכות מדור קודם
- Cloud connectivity
- תמיכה ותחזוקה שוטפים
Contact Info:
- Website: spacetag.co.uk
- Address: The Portway Centre, Old Sarum Park, Salisbury, Wiltshire, SP4 6EB, United Kingdom
13. First Net Systems
First Net Systems is a UK company that helps businesses keep their tech in order. They cover a bit of everything in IT, from managing infrastructure and networks to building software and making sure systems actually connect the way they’re supposed to. A lot of their work comes down to keeping things running smoothly so companies aren’t stuck dealing with tools that don’t talk to each other.
They’re also used to working with older setups that still play an important role. Instead of telling businesses to throw everything out, they’ll usually find ways to update what’s already there and hook it into newer platforms. It’s a straightforward approach that avoids unnecessary complexity while still giving teams reliable systems they can actually depend on.
נקודות עיקריות:
- Offers IT support along with software and integration work
- Focuses on making systems connect without hassle
- Updates older setups instead of pushing for full rebuilds
- Keeps solutions simple and reliable
שירותים:
- תמיכה בתשתית IT
- API integration and system connectivity
- פיתוח תוכנה בהתאמה אישית
- פיתוח אפליקציות אינטרנט ומובייל
- שדרוגי מערכות מדור קודם
- Ongoing monitoring and maintenance
Contact Info:
- Website: firstnetsystems.co.uk
- Email: info@firstnetsystems.co.uk
- Phone: +44 800-689-1012
- Address: 69 Great North Road, New Barnet, London, United Kingdom, EN5 1AY
14. Nizi Solutions
Nizi Solutions is a UK company that builds custom software and helps businesses connect the systems they already use. They often step in when off-the-shelf tools don’t quite fit, creating applications that are shaped around how a team actually works. A lot of their focus is on making different platforms share data properly, cutting out the manual workarounds that slow things down.
They also deal with older systems that companies still depend on. Instead of telling clients to rip everything out, they’ll usually modernise what’s already there and hook it into newer tech. It’s a practical way of keeping businesses moving without unnecessary rebuilds, while still giving them tools that work well in the long run.
נקודות עיקריות:
- Builds custom software around business needs
- Connects different platforms through integrations
- Updates and adapts older systems
- Keeps solutions simple and usable
- UK-based team with varied project experience
שירותים:
- אינטגרציה ופיתוח של API
- פתרונות תוכנה בהתאמה אישית
- פיתוח אפליקציות אינטרנט ומובייל
- שדרוגי מערכות מדור קודם
- Cloud connectivity
- תמיכה ותחזוקה שוטפים
Contact Info:
- Website: www.nizisolutions.co.uk
- Email: nizisolutionsuk@gmail.com
- Phone: +92 344 525 3421
- Address:1010 Avenue of the Moon New York, NY 10018 US +92 344 525 42
- LinkedIn: www.linkedin.com/company/nizisolutionsuk
- Twitter: x.com/nizisolutions
- Facebook: www.facebook.com/nizisolutionsuk
מַסְקָנָה
API integration in the UK isn’t handled by a single type of company. You’ve got small teams that zero in on specific problems and bigger outfits that cover the whole stack, from software builds to long-term support. Some focus on connecting legacy systems to modern tools, while others are all about building new services from scratch.
For businesses, the upside is choice. You can start small with a single integration or bring in a partner to look after the bigger picture. Either way, the goal’s the same: cut down on manual fixes and make the systems you already rely on actually work together.
