Kainos

Belfast software firm serving the UK public sector and Workday users

Overview

Kainos is a Belfast-based software and digital services company listed on the London Stock Exchange, with a fiscal year ending 31 March. For FY26 it reported revenue of £431.1 million, up 17%, and annual recurring revenue in its Workday Products business up 23% to £89.0 million.[11] Headcount rose by more than 20% to 3,475, including about 120 staff from the Canadian public-sector consultancy Davis Pier, whose acquisition completed in September 2025.[12] Kainos combines a digital services practice, best known for UK government and NHS work, with a Workday partner practice and its own testing and security software for Workday customers. It is the smallest company in this list by headcount but one of the faster-growing.

Kainos strengths and limitations

Strengths

  • Strong track record in UK public-sector digital services
  • Specialist Workday consulting and products
  • Revenue growth of 17% in FY26
  • Own Workday products alongside services

Limitations

  • Revenue concentrated in the UK public sector and Workday ecosystem
  • Commercial-sector business was deprioritised in FY2026
  • Smallest bench in the list
  • Heavy reliance on UK public-sector demand

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