30. Integralis - £67.8m

Last year was a tough one for the NTT-owned security integrator, with the firm slipping to a six-figure operating loss following a 2.4 per cent decline in UK revenue. Operating loss for the year stood at £321,490, compared with a profit of more than £1.25m in the prior year. Simon Church, who joined the VAR three years ago as UK MD, was recently promoted to the global CEO role, taking over from Georg Magg, who departed after seven years at the top.