58. NextiraOne - £36.25m

The comms integrator has suffered in the last couple of years in light of the swingeing cuts to public spending, but it still managed to increase its top line in 2011, albeit at the expense of reduced profit levels. Sales crept up by £300,000 on the prior year’s levels, but operating profit before interest declined by a similar amount to £659,000. The order book ticked over briskly during the year, with £44.2m of deals coming in, taking the book-to-bill ratio from 0.97 to 1.22.