3. Business Systems International
Revenue growth: +154%
Revenue: £188.8m
Oxygen 250 ranking: 18
This supplier of mission-critical, low-latency AI infrastructure chalked up a 154% revenue boom in its year to 31 March 2025 partly to its focus on “AI innovation”.
The London-based NVIDIA and Dell partner generated £163.4m of its £188.8m total top line from the UK. Operating profits nigh-on tripled to £34.1m.
It pinpointed US expansion and developing solutions for liquid cooled data centres as its two priorities for the year ahead.
Oxygen ice-breaker:
BSI claims it has built “one of the world’s most sophisticated AI warehouse ecosystems” for Ocado, in partnership with Dell and NVIDIA.
Download Oxygen 250 2026 here
See next page for 2 even faster-growing partners…
