Revenue: £223.8m (+1%)
Net profit: 8.5% Staff: 1,973
RM is now as well known for supplying teaching resources as it is tech, but it was its tech arm - RM Education - that brought home the bacon in its year to 30 November 2019, swelling revenue six per cent to £71.6m against a company-wide one per cent uplift. RM Education has endured a more mixed 2020, with sales starting to improve in June following a tough, COVID-hit first half. The LSE-listed firm is seeking a new chief executive following the resignation in September of David Brooks.