Best Software Development Outsourcing UK

Thoughtworks vs Version 1: full comparison for 2026

Quick verdict

Thoughtworks (3.9/5) edges ahead of Version 1 (3.9/5) overall. Thoughtworks is the better choice for complex modernisation, engineering culture change. Version 1 is the stronger option for oracle and Microsoft estates, public-sector managed services. The right choice depends on your project size, budget, and required tech stack.

Thoughtworks vs Version 1: head-to-head summary

Criterion Thoughtworks Version 1
Founded 1993 1996
HQ Chicago, United States (UK offices) Dublin, Ireland (UK offices including Birmingham)
Team size 10,000+ 3,000+
Rating 3.9 / 5 3.9 / 5
Primary differentiator Thought leadership in software practice, backed by a large global delivery network Managed services for Oracle, Microsoft and AWS estates with Indian and Spanish delivery
Pricing model Time and materials Managed service, time and materials, fixed price
Min. engagement Not published Not published
Primary tech stack Java, Kotlin, TypeScript Oracle, Microsoft Azure, AWS
Industries served Financial services, Retail, Public sector, Healthcare, Media Public sector, Financial services, Healthcare, Utilities

Thoughtworks vs Version 1: overview

Thoughtworks

Thoughtworks was founded in Chicago in 1993 and has had a significant UK presence for decades. Apax Partners took it private in a deal valued at about $1.75bn that closed in late 2024, after a NASDAQ listing in 2021, and the transaction came with job cuts affecting about 6–7% of its 10,500 staff. It is known for its Technology Radar and for shaping agile and continuous-delivery practice. It has delivery centres in India, China, Brazil and elsewhere, but UK engagements usually lean on senior onshore consultants.

Version 1

Version 1 was founded in Dublin in 1996 and has been majority-owned by Swiss investor Partners Group since July 2022, in a deal reported at around €800m. It had more than 3,200 staff by 2023 and opened a Birmingham hub with 500 planned jobs, plus UK acquisitions such as Automation Logic. Much of its UK work is Oracle, Microsoft and AWS managed services for public-sector bodies. Delivery comes from Ireland, the UK, Spain and India.

Services and capabilities: Thoughtworks vs Version 1

Capability Thoughtworks Version 1
Custom software development ✓ ✓
Mobile app development ✗ ✗
Cloud & DevOps ✓ ✓
Data & AI ✓ ✓
Legacy modernisation ✓ ✓
Embedded & IoT ✗ ✗
Dedicated team model ✗ ✗
Fixed-price projects ✗ ✓

Tech stack comparison: Thoughtworks vs Version 1

Framework / platform Thoughtworks Version 1
.NET N/A ✓
Java ✓ ✓
Python N/A N/A
React N/A N/A
AWS ✓ ✓
Azure ✓ ✓
Kubernetes ✓ N/A
Embedded N/A N/A

Pricing comparison: Thoughtworks vs Version 1

Criterion Thoughtworks Version 1
Minimum engagement Not published Not published
Engagement models Time and materials, Team extension Managed service, Fixed project, Time and materials
Rate transparency Not public Not public
Price tier Mid-market Mid-market

Target audience comparison: Thoughtworks vs Version 1

Dimension Thoughtworks Version 1
Best company size Enterprise Startup to mid-market
Best industries Financial services, Retail, Public sector Public sector, Financial services, Healthcare
Best use cases A bank wants to break up a core monolith., A retailer needs to rebuild its platform and change how teams work. A public body needs Oracle E-Business Suite support and migration., A utility wants Azure managed services.
Typical project type Time and materials Managed service

Thoughtworks vs Version 1: pros and cons

Thoughtworks
+ Very strong senior consultants and engineering practices
+ Global delivery network for blended teams
+ Well suited to modernisation programmes that need cultural change
- Taken private by Apax in 2024 alongside a restructuring that cut 6–7% of staff
- Premium pricing, especially with senior UK consultants
- Overkill for straightforward builds
Version 1
+ Strong in Oracle and Microsoft environments common in UK public bodies
+ Indian and Spanish delivery lower costs on managed services
+ Private-equity backing has funded UK expansion
- Majority-owned by Partners Group since 2022, so an eventual sale or exit is likely
- Product-style bespoke development is less central than managed services

Who should choose Thoughtworks?

A typical fit: a bank wants to break up a core monolith.

Thought leadership in software practice, backed by a large global delivery network. Minimum engagement is not publicly disclosed. Works best with clients in Financial services, Retail, Public sector, Healthcare, Media.

Who should choose Version 1?

A typical fit: a public body needs Oracle E-Business Suite support and migration.

Managed services for Oracle, Microsoft and AWS estates with Indian and Spanish delivery. Minimum engagement is not publicly disclosed. Works best with clients in Public sector, Financial services, Healthcare, Utilities.

Decision matrix: Thoughtworks vs Version 1

Your situation Recommended choice
You need full-ownership delivery on a defined project scope Version 1
You need a large dedicated team for an ongoing programme Check each company's engagement model
Your budget is at the lower end Compare: Thoughtworks (Not published) vs Version 1 (Not published)
You need specialist depth in a specific vertical Thoughtworks
You want engineers added to your own in-house team Thoughtworks
Your product includes hardware, firmware or connected devices Neither; consider an embedded specialist

Use case fit: Thoughtworks vs Version 1

Use case Thoughtworks fit Version 1 fit Winner
A bank wants to break up a core monolith. Strong Limited Thoughtworks
A retailer needs to rebuild its platform and change how teams work. Strong Limited Thoughtworks
A public body needs Oracle E-Business Suite support and migration. Limited Strong Version 1
A utility wants Azure managed services. Limited Strong Version 1
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 Limited Strong Version 1

Verdict: Thoughtworks vs Version 1

Thoughtworks (3.9/5) is the stronger overall choice for most Software Development Outsourcing projects. Thought leadership in software practice, backed by a large global delivery network.

Version 1 (3.9/5) is worth a look in a scenario like this: a utility wants Azure managed services. If your situation matches that, Version 1 is a competitive option.

Related comparisons

Thoughtworks vs Version 1 FAQ

Is Thoughtworks better than Version 1?

Thoughtworks (3.9/5) scores higher overall, but "better" depends on your use case. Thoughtworks's strongest advantage: very strong senior consultants and engineering practices. Version 1's strongest advantage: strong in Oracle and Microsoft environments common in UK public bodies.

How do Thoughtworks and Version 1 differ in pricing?

Thoughtworks uses time and materials pricing. Version 1 uses managed service, time and materials, fixed price pricing. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.

Which is better for enterprise: Thoughtworks or Version 1?

Thoughtworks 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 Thoughtworks and Version 1?

Thoughtworks's primary differentiator is: thought leadership in software practice, backed by a large global delivery network. Version 1's primary differentiator is: managed services for Oracle, Microsoft and AWS estates with Indian and Spanish delivery. They also differ in team size (10,000+ vs 3,000+), minimum engagement (Not published vs Not published), and primary industries served (Financial services, Retail vs Public sector, Financial services).

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