Service
Legacy software modernisation
Keep the business running while the platform stops holding you back.
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- API layers
Rewrites are expensive. Doing nothing is often more expensive. We help you choose: patch and stabilise, migrate selected components, or rebuild where the architecture truly cannot carry the next five years.
We have stepped into ageing stacks, brittle ERPs and platforms that only one person understood. The goal is a realistic path — not a slide deck promising a greenfield rebuild by Christmas.
Legacy software modernisation for UK teams
UK SMEs and regulated teams come to us when the system that runs the business is older than the people who still have to change it. The usual cases are a PHP application left by a previous supplier, an internal .NET tool, a Microsoft Access database that finance or operations opens every morning, or Excel workbooks that have become the real system of record. Orders, client records and audit history are live in those files. Switching them off for a rebuild is not a plan.
A phased migration keeps that system in service. We assess the code, the data and who still understands how it behaves, then move one bounded slice at a time: a report, a department, or a single integration. Staff keep working in the current system until the new path has been used in production. There is no weekend cutover where the business waits for the whole platform to come back.
Data protection sits in the same plan. We record what personal data the system holds, who can see it and where it is stored, and we move it so UK GDPR duties stay intact: a stated purpose, limited access, and a check that what arrived matches what left. Hosting can stay on the server you already run, including a UK host, or move to a UK or EU cloud region when that is the stronger control. We agree the destination before any production data is copied.
Problems we solve
- Only one or two people can change the system safely
- Vendors or previous teams have left
- Performance and reliability issues keep landing on ops
- Integrations and reporting have become a maze
What we deliver
- Codebase and architecture assessment
- Stabilisation and bug backlog triage
- Incremental modernisation plans
- Selected component rewrites and API layers
- Cloud migration where it earns its keep
Proof
A regulated compliance platform we designed and built to replace work scattered across spreadsheets, shared drives and email. Policy, risk, controls, audit, evidence and GDPR in one live system. Real screenshots are on the case study.
Read the enterprise GRC case studyRelated
Common questions
What drives the cost of legacy software modernisation?
Cost follows what we have to understand and what must stay live. A single Access database with a known owner is a different job from a PHP or .NET system only one contractor can change, with years of Excel exports hanging off it. The main drivers are how well the current system is documented, how much data and integration has to move, whether we stabilise before we migrate, and how many teams depend on it each day. We do not publish a rate card. After a short assessment we set out scope, approach and pricing in writing before you commit.
How long does a legacy modernisation take?
A first phase — assessment plus one migrated workflow — is scoped once we have seen the system, and is usually measured in weeks rather than a multi-year programme. A full move of a business-critical PHP, .NET, Access or Excel setup depends on data volume, integrations and how safely the old path can be retired. The timeline is part of the written plan, with a first slice you can use in production before later phases start.
Can you migrate without downtime?
Yes. The existing system stays up and we move one bounded slice at a time: a report, a department or a single integration. The old path stays available until the new one has been used for real work. Staff are not asked to wait on a weekend cutover of the whole platform.
Can you keep our existing data?
Yes. Orders, client records, audit history and the spreadsheets that sit beside the system come across when they are in scope. We agree what is extracted, how it is checked on the new side, and what is switched off only after that check. Modernising is not a reason to leave the history behind.
Can we stay on our current host, or move to the cloud?
You can stay. Many teams want the software modernised and the server left where it is — an existing UK host, a managed server, or the network the Access file already sits on. Cloud is an option when it reduces risk or operating cost, including a UK or EU region when that is the better data-protection control. We recommend one or the other after the assessment. A cloud move is not required in order to modernise.
Assess an existing platform
Bring what you know about the current stack. We will tell you whether to stabilise, modernise or rebuild.