Best Software Development Outsourcing UK

Softwire vs Kainos: full comparison for 2026

Quick verdict

Softwire (4.3/5) edges ahead of Kainos (4.2/5) overall. Softwire is the better choice for UK media and charities, bespoke builds, onshore teams. Kainos is the stronger option for UK government digital services, Workday programmes. The right choice depends on your project size, budget, and required tech stack.

Softwire vs Kainos: head-to-head summary

Criterion Softwire Kainos
Founded 2000 1986
HQ London, United Kingdom Belfast, United Kingdom
Team size 250–500 3,000+
Rating 4.3 / 5 4.2 / 5
Primary differentiator Long-standing onshore bespoke development that trains its own graduate engineers Combined government digital delivery and Workday partnership, listed on the LSE
Pricing model Time and materials, fixed price Time and materials, fixed price, framework call-offs
Min. engagement Not published Not published
Primary tech stack C#, .NET, Java Java, .NET, AWS
Industries served Media, Charities, Public sector, Education, Retail Public sector, Healthcare, Financial services, Commercial enterprises

Softwire vs Kainos: overview

Softwire

Softwire has been writing bespoke software out of London since 2000; the legal entity was incorporated in 1999. Directory estimates put its headcount anywhere between 240 and 500, with offices in London, Manchester and Bristol. Clients have included the BBC and Channel 5, and the firm also runs a developer training programme. Nearly all of its delivery happens in the UK, so it competes on quality and communication rather than price.

Kainos

Kainos was founded in Belfast in 1986 and is listed on the London Stock Exchange. In the year to March 2026 it reported revenue of £431.1m, up 17%, and a workforce of 3,216 after adding 420 people, a rebound from a 2024/25 restructuring that cut staff by 7%. It runs three divisions: Digital Services, Workday Services and Workday Products. Its government work spans departments such as the Home Office and NHS bodies, delivered from the UK and Ireland.

Services and capabilities: Softwire vs Kainos

Capability Softwire Kainos
Custom software development ✓ ✓
Mobile app development ✗ ✗
Cloud & DevOps ✓ ✓
Data & AI ✗ ✓
Legacy modernisation ✗ ✓
Embedded & IoT ✗ ✗
Dedicated team model ✗ ✗
Fixed-price projects ✓ ✓

Tech stack comparison: Softwire vs Kainos

Framework / platform Softwire Kainos
.NET ✓ ✓
Java ✓ ✓
Python N/A ✓
React ✓ N/A
AWS ✓ ✓
Azure ✓ ✓
Kubernetes N/A ✓
Embedded N/A N/A

Pricing comparison: Softwire vs Kainos

Criterion Softwire Kainos
Minimum engagement Not published Not published
Engagement models Fixed project, Time and materials Fixed project, Time and materials
Rate transparency Not public Not public
Price tier Mid-market Mid-market

Target audience comparison: Softwire vs Kainos

Dimension Softwire Kainos
Best company size Startup to mid-market Startup to mid-market
Best industries Media, Charities, Public sector Public sector, Healthcare, Financial services
Best use cases A broadcaster needs a new content management or scheduling tool., A charity wants a donor platform built by a UK team it can visit. A government department needs a GOV.UK service built and run., An NHS body wants a digital patient service delivered onshore.
Typical project type Fixed project Fixed project

Softwire vs Kainos: pros and cons

Softwire
+ Twenty-five years of bespoke UK delivery with recognisable media clients
+ Onshore teams make workshops and on-site sessions easy
+ Willing to take on fixed-price work for well-scoped projects
- UK-based delivery means higher rates than nearshore vendors
- Headcount and office figures vary widely between directories, so ask for current numbers
Kainos
+ Belfast-based delivery costs less than London while staying UK-based
+ Public reporting gives buyers verified financials and headcount
+ Very familiar with UK public-sector procurement frameworks
- Little offshore capacity, so rates do not compete with nearshore vendors
- Workday business takes a growing share of leadership focus
- The 2024/25 restructuring shows exposure to swings in public-sector spending

Who should choose Softwire?

A typical fit: a broadcaster needs a new content management or scheduling tool.

Long-standing onshore bespoke development that trains its own graduate engineers. Minimum engagement is not publicly disclosed. Works best with clients in Media, Charities, Public sector, Education, Retail.

Who should choose Kainos?

A typical fit: a government department needs a GOV.UK service built and run.

Combined government digital delivery and Workday partnership, listed on the LSE. Minimum engagement is not publicly disclosed. Works best with clients in Public sector, Healthcare, Financial services, Commercial enterprises.

Decision matrix: Softwire vs Kainos

Your situation Recommended choice
You need full-ownership delivery on a defined project scope Softwire
You need a large dedicated team for an ongoing programme Check each company's engagement model
Your budget is at the lower end Compare: Softwire (Not published) vs Kainos (Not published)
You need specialist depth in a specific vertical Softwire
You want engineers added to your own in-house team Neither lists team extension; ask about dedicated teams
Your product includes hardware, firmware or connected devices Neither; consider an embedded specialist

Use case fit: Softwire vs Kainos

Use case Softwire fit Kainos fit Winner
A broadcaster needs a new content management or scheduling tool. Strong Limited Softwire
A charity wants a donor platform built by a UK team it can visit. Strong Limited Softwire
A government department needs a GOV.UK service built and run. Limited Strong Kainos
An NHS body wants a digital patient service delivered onshore. Limited Strong Kainos
You need hardware, firmware or IoT work in the same contract Limited Limited Both equally
You want a fixed-price first phase before a longer engagement Strong Strong Both equally

Verdict: Softwire vs Kainos

Softwire (4.3/5) is the stronger overall choice for most Software Development Outsourcing projects. Long-standing onshore bespoke development that trains its own graduate engineers.

Kainos (4.2/5) is worth a look in a scenario like this: an NHS body wants a digital patient service delivered onshore. If your situation matches that, Kainos is a competitive option.

Related comparisons

Softwire vs Kainos FAQ

Is Softwire better than Kainos?

Softwire (4.3/5) scores higher overall, but "better" depends on your use case. Softwire's strongest advantage: twenty-five years of bespoke UK delivery with recognisable media clients. Kainos's strongest advantage: belfast-based delivery costs less than London while staying UK-based.

How do Softwire and Kainos differ in pricing?

Softwire uses time and materials, fixed price pricing. Kainos uses time and materials, fixed price, framework call-offs pricing. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.

Which is better for enterprise: Softwire or Kainos?

Softwire is the larger team and typically the better enterprise-scale choice. For very large programmes, verify team size and compliance coverage directly with each company before shortlisting.

What are the main differences between Softwire and Kainos?

Softwire's primary differentiator is: long-standing onshore bespoke development that trains its own graduate engineers. Kainos's primary differentiator is: combined government digital delivery and Workday partnership, listed on the LSE. They also differ in team size (250–500 vs 3,000+), minimum engagement (Not published vs Not published), and primary industries served (Media, Charities vs Public sector, Healthcare).

Verify all details directly with each company before making a decision.