47. Zones

Revenue: £91.3m (+31.5%)

Staff: N/A

The UK subsidiary of US-based Zones had another strong year, growing revenue by 14 per cent. Margins also improved, with Zones crediting this to a continued pandemic and Brexit recovery.

Customers also increased technology spend, thanks to reopening offices, Zones said.

The Apple, Cisco and Dell partner also continued its geographic expansion with the opening of a new site in the Netherlands, after landing in Turkey, Ireland and Israel in previous years.