Headcount: 25 (+400%)
Specialism: Cybersecurity
HQ: Newport Pagnell, Buckinghamshire
This cybersecurity specialist makes the top 15 on the back of a 400% growth in its average monthly headcount between calendar 2019 and 2022.
Founded in 2019 by former UK Foreign, Commonwealth and Development Office employee Dave Allan, CYSIAM netted a £1.15m investment from Maven VCTs in 2022.
The Crowdstrike partner, which counts central government and Big Four consultancy firms among its clientele, specialises in providing advice, training, and managed services in cyber and secure technology systems.
