73. Comparex - £25.4m

The software licensing specialist joined the £25m club in FY12 after growing sales 14.2 per cent. Operating profit was also on the rise, increasing six per cent to £409,112. During the year the firm, formerly known as PC-Ware, changed its name to that of its German parent company. A satellite office was also launched in York, where it will operate in close proximity to a clutch of other Microsoft LARs.