Custom Software Development for London Enterprises

Pemberton Group: Replacing 15-Year-Old Legacy System in 16 Weeks

We conducted a thorough discovery phase to map every business process the legacy system supported, then designed a modern replacement with a phased migration strategy. We ran both systems in parallel during the transition, with automated data reconciliation checks to ensure nothing was lost.

Ascent Insurance: WCAG 2.1 AA Compliant Claims Portal

We built the claims portal from scratch with accessibility as a foundational design principle. Every component was developed with semantic HTML, ARIA labels, keyboard navigation, and screen reader compatibility. We conducted testing with assistive technology users throughout development.

“Replacing a system that had been running for fifteen years is the kind of project that keeps CIOs awake at night. They managed the entire migration with military precision — phased rollout, parallel running, zero data loss. The new platform passed our security audit on the first attempt, which is almost unheard of for a system of this complexity. Our board was thoroughly impressed with the delivery.”

“Accessibility compliance in insurance is not optional — it is a regulatory requirement. They built our claims portal to WCAG 2.1 AA standards from the ground up rather than retrofitting it as an afterthought. Every component was tested with screen readers and keyboard navigation. The result is a portal that genuinely works for everyone, and our compliance team signed it off without a single remediation request.”

“Integrating with NHS systems is notoriously difficult — the documentation is sparse, the environments are complex, and the security requirements are stringent. They navigated all of it with an expertise that suggested they had done this many times before. The patient management system they delivered has been running flawlessly for over a year and our clinical staff find it genuinely intuitive.”

Custom software development costs depend on the scope and complexity of what you are building. A simple internal tool might cost £15,000–£30,000. A complex enterprise platform with multiple integrations, user roles, and reporting typically runs £60,000–£150,000+. We provide detailed written estimates after a scoping session — no obligation to proceed.

A focused internal tool or automation can be delivered in 6–10 weeks. A more complex platform with integrations, reporting, and multiple user roles typically takes 4–6 months. Enterprise systems with significant complexity can take longer. We give you a realistic timeline in writing before work begins.

Yes. System integration is a significant part of what we do. We have experience integrating with ERP systems, accounting software, CRM platforms, HR systems, and legacy applications. If a system has an API we can integrate with it. If it does not, we assess alternative approaches during scoping.

You own it completely. All intellectual property is transferred to you on final payment. We provide thorough documentation and, if requested, a knowledge transfer session to ensure your team can maintain and extend the software. We also offer ongoing support and development retainers if you want to continue working with us.

Yes. We are London-based but work with clients across the UK and internationally. Most project work is managed remotely, and we travel to client sites for discovery sessions and key milestones when that adds value.