55. Telefónica Tech UK&I

Revenue: £77.9m (+23%)

Net profit: 2.1% Staff: 600

This London-based HPE and Microsoft Azure partner switched from German to Spanish ownership in July when Telefónica acquired it from Cancom for €398m, promptly renaming it Telefónica Tech UK&I in October. "The ambition is to be the leader in cloud and cyber in the UK and Ireland, and I think [Telefónica] have the wherewithal to help us get there," CEO Martin Hess recently told CRN. A lack of new accounts means we have had to recycle numbers for its year to 31 December 2019, when its revenues hit £77.9m.