41. Storm Technologies

Key points

Revenue: £93.2m (+14%)

Net profit: 2.1%

Staff: 138

This Watford-based firm describes itself as "one of the fastest-growing independent IT VARs in the UK", a billing it honoured in its year to 31 December 2017 as its revenue pogoed 14 per cent. Net profits rose by a similar margin to £2m, while sales from mainland Europe nearly doubled to £5.5m. The Dell EMC Titanium and HP Gold partner said it intended to "significantly" expand its office and warehouse facilities in its current year to support its growth.