Revenue: £214.4m (+20%)
Net profit: 15.5% Staff: 499
The UK arm of this Accenture and Microsoft joint venture - which claims to be Microsoft's most highly decorated partner - breached the £200m-revenue barrier in its year to 31 August 2019. Net profits followed suit, vaulting from £28.8m to £33.1m. Globally, Avanade is a $2bn-revenue juggernaut with 39,000 staff and 18 Microsoft Gold competencies. Chief executive Pam Maynard recently told us the pandemic had only boosted the relevance of Microsoft technology in the enterprise.