Erevena partners with Deloitte on the 2026 UK Technology Fast 50
We partnered with Deloitte again this year on the UK Technology Fast 50, which ranks the UK’s 50 fastest-growing technology companies by revenue growth over three years. The awards took place on Thursday 5 November at the Park Hyatt London River Thames.
As part of the partnership, we named our client Callosum the 2026 Erevena Rising Star. The London-based company builds software that splits AI workloads into smaller tasks and assigns each one to the model and chip best suited to it, so that organisations can run their AI workloads heterogeneously rather than relying on identical large models running on identical Nvidia GPUs. As more companies move away from a single type of hardware, Callosum is building the layer that connects the rest. Erevena recently placed Callosum’s GTM Advisor.
This year’s cohort
The 2026 winners grew revenue by an average of 2,824% over three years and generated £727 million in combined revenue in 2025/26. Magic AI, which makes an AI-powered fitness mirror, ranked first with growth of 19,774%. It was also the hardest year to qualify since 2021: the 50th-placed company grew 708%.
Fintech and B2B software lead the list with 17 and 16 companies, two-thirds of the ranking between them, and both are core sectors for Erevena. London is home to 33 of the 50, though Cambridgeshire and East, the South East, and the South West and Wales each produced three winners.
Congratulations to Callosum and to every company on this year’s list. Full press release here and the full ranking is available at deloitte.co.uk/fast50.