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Yorkshire

Best Custom Software Developers in Yorkshire

Leeds and Sheffield have long-established software firms, several older than most of the agencies competing with them. Here's who has a real Yorkshire base and what each is good at. We're not one of them: we're in Gravesend, Kent, and we work with Yorkshire businesses remotely.

Talk to Rob and Jaseor ring 01474 639 089

You'll be talking to one of us, not a salesperson.

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Yorkshire's firms are more different than their websites suggest

Last reviewed October 2026. We wrote this and we are on the list, so read it with that in mind. Details of other firms are from their own sites and may have changed.

Every firm here says it builds bespoke software for businesses that need it. Underneath, the differences are enormous. Audacia works on regulated enterprise projects for the likes of Pfizer and Scania. Answer Digital has been delivering data and integration work for the NHS, the MoD and Yorkshire Water since 1998. Illuminaries has been writing .NET and SQL Server systems in Sheffield since 1991, largely for the public sector. PCM Systems sells software development as one of seven services, next to IT support and VoIP.

Pick the wrong one and you'll be either the smallest client on the books or the largest. Neither is much fun.

Quick comparison

Every location comes from the firm's own contact page or its Companies House record.

CompanyBest forSectorsBased
Dev Partners (us)Business systems, integrations and replacing old softwareRetail, wholesale, logistics, manufacturing, publishingGravesend, Kent. We work with Yorkshire remotely
AudaciaEnterprise and regulated projectsPharma, construction, energy, governmentLeeds LS2, also London
Answer DigitalData and systems integration at scaleHealthcare, finance, utilities, defenceLeeds LS11
IlluminariesMicrosoft-stack systems and databasesPublic sector, education, charitySheffield S2
PCM SystemsSoftware alongside managed ITManufacturing, legal, property, educationMorley, Leeds LS27

The five, one by one

  • 1. Dev Partners (that's us)

    A small in-house team in Kent, writing bespoke code you own outright. Our strongest ground is connecting systems: ERP, accounts and warehouse software. We have no Yorkshire office and don't pretend to.

  • 2. Audacia

    Bespoke software, mobile, front end and systems integration for big organisations. Named clients include O2, Pfizer, Scania and Persimmon. Worth a call if you're a large business in a regulated sector.

  • 3. Answer Digital

    Engineering and delivery teams for data and integration work at scale, trading since 1998, with clients including the NHS, Yorkshire Water, the MoD and Purplebricks.

  • 4. Illuminaries

    A Sheffield firm working on .NET, SQL Server, databases and the web since 1991, with NHS trusts, Sheffield universities and UNICEF among its clients. A natural fit if you're on the Microsoft stack.

  • 5. PCM Systems

    Software alongside managed IT, across seven named sectors. It suits a smaller business that wants one supplier for several things. It doesn't publish named clients.

How we judged them

We left out anyone we couldn't place properly, and judged the rest on five things.

  • Custom code or configuration

    There's a real difference between writing software and assembling a configurable platform. For simple needs either can work. For anything custom, only the first will do.

  • Integration

    Most projects need to connect to something. Doing that reliably is a distinct skill, and not everyone has it, even if they say they do.

  • Track record at your scale

    A firm whose usual job is small will be stretched by something business-critical, and the opposite is true too.

  • Who does the work

    Some firms pitch senior people and deliver through junior or outsourced developers. We favoured those where the people who talk to you write the code.

  • Where they really are

    A lot of firms publish a landing page for a county with no office there. Addresses here came from the firm's own contact page or Companies House.

Where we differ

Scale and focus. Audacia and Answer Digital are enterprise firms working on regulated programmes. They're excellent at that. We write software for owner-run and mid-market businesses, in-house, with no account management layer.

Our usual work is CRMs, warehouse and order management systems, booking and quoting tools, and the automation that replaces processes running on spreadsheets and memory. Integration is our strongest suit: ERPs, accounting packages, warehouse systems and third-party APIs.

If your project is a regulated enterprise programme, talk to Audacia or Answer Digital. If it's an operational system that has to fit your business exactly and talk to everything else you run, that's what we do all day.

Three questions for any of them

Will you write it or configure it? Writing software from scratch and assembling a configurable platform are different things. For simple needs either can work. For workflows that are really your own, only the first gives you a system that fits.

What exactly can you integrate with? Only a minority of firms say which ERP, accounts or warehouse systems they connect to. If yours matters, ask them to name it and show you one they've done.

Will I be big or small to you? Ask who your typical client is, and who'll really be working on yours. More in our guide to choosing a software company.

Do you need someone in Yorkshire?

Honestly, maybe. If you want a firm you can walk into, take one of the others. They're good.

Most of a software project happens remotely, because that's where the code is. If what matters is talking to the people doing the work, and having software built, taken on or looked after by a small senior team, distance doesn't change much. When it's worth being in the room, we'll get on a train.

Questions we get asked

  • Are you based in Yorkshire?

    No. We're in Gravesend, Kent, and we'd rather say so than rent a postcode.

  • Who's the best software company in Yorkshire?

    It depends on your size and sector. Large regulated work points to Audacia or Answer Digital, Microsoft-based systems to Illuminaries, and one supplier for IT and software to PCM Systems.

  • Do you publish prices?

    No, and nor do any of the others here. Ask for a fixed price for each stage, in writing, before work starts.

  • Will we own the code?

    With us, yes, outright. Ask any supplier the same question.

Photos of Rob and Jason, who run Dev Partners

Hello, you get us

Rob on the left, Jase on the right. No sales team and no account managers. One of us is on every job, from the first chat to long after it goes live, and the people writing your code sit in the same small team.

Meet everyone

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Tell us what you've got

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