Consultancy

Reimagine the future of your tech.

Whether you’re dealing with legacy tech, architecture uncertainty, or a build vs. buy decision, our Modernisation Readiness Review gives you the clarity to move forward, strategically and confidently.

Book your Modernisation Readiness Review
Modernisation Readiness Review

TRUSTED BY GLOBAL ORGANISATIONS

Vodafone
BT
HSBC
OAG Flights
Maritime and Coastguard Agency
Aldermore
HM Land Registry
Zoopla
Ruffer

Results we’ve delivered from our reviews

75 Day Reduction

Reduced a change cycle by 75 days, from 90 to 15, after legacy decoupling

£400K Saving

Helped a public sector team escape a £400K/year licensing trap

3x Faster

Identified a 3x faster delivery route by building, not buying

£2M Saving

Helped a Tier 1 bank avoid £2M+ in unnecessary platform spend

Modern Ambitions.
Legacy Reality.

Big ambitions, but a legacy stack holding you back? You’re not the only one wrestling with systems that resist change, slow progress, or put your reputation at risk.

You’re probably facing one or more of these challenges

  • Systems you can’t change, or even trust
  • Unavailability and instability disrupting key services
  • Tech debt that’s become too tangled to tackle
  • Teams constrained by vendor lock-in or legacy skills
  • Product licensing that feels like ransom
  • Internal blockers to any kind of meaningful change

What our review unlocks

  • A clear, objective assessment of your system’s current state
  • Strategic options based on business outcomes, not tools
  • Unbiased guidance. We’re not here to sell you software
  • Freedom from constant fixes so you can focus on real progress

How it works. Our process

This is not a static report. It’s a working diagnosis, built with you and led by a senior, cross-functional team of engineers, architects and delivery specialists

How it works. Our process

We thought we had to rebuild from scratch. Catapult helped us see where the real problems were and what we could reuse, replace or retire.

Tech Lead. Regulated Enterprise

For Public Sector Leaders

Break out of legacy traps and make a case for smarter, lower-risk investment

For Heads of Engineering

Validate what’s slowing delivery and find a path to faster change

For CIOs & CTOs

Understand where to invest and what to modernise, without throwing everything out

Facing a modernisation decision? Not sure whether to build, buy or stick?
We’ll help you evaluate your options

Why Catapult for modernisation

From legacy pain to future gains

Modernising legacy systems isn’t just about the tech, it’s about making the right calls for the future of your business. Whether you’re navigating tangled architectures, technical debt, or trying to avoid another expensive vendor lock-in, we help you make confident, value-driven decisions.

20+

years of modernising complex, critical systems

Cross-functional teams fluent in business impact and technical detail

Cross-functional teams fluent in business impact and technical detail

Technology- agnostic advice with no platforms to sell and no bias

Technology- agnostic advice with no platforms to sell and no bias

We challenge assumptions, uncover hidden blockers and give you a path to progress

We challenge assumptions, uncover hidden blockers and give you a path to progress

Trusted by public sector, financial services and global organisations when the stakes are high

Trusted by public sector, financial services and global organisations when the stakes are high