52. ProAV

Revenue: £81.1m (+32%)

Staff: 405

Following a Covid-hit fiscal 2021, this Egham-based audiovisual integrator's revenues rebounded to hit a new high in its year to 31 March 2022. Some £15.4m of the £81.1m total was generated by facilities management. Boasting offices in Frankfurt, Shanghai and Dublin, the Cisco, Clevertouch, Crestron and Christie partner claims to have completed over 700 projects outside of the UK. It counts Channel 4, London School of Economics and HMRC among its clients.