Gritit counts the NHS among its customers and continues to provide services to thousands of sites during the lockdown. Chief executive Jason Petsch, 46, leads the winter-gritting specialist and pays tribute to the “resilience and resourcefulness” of his teams. He co-founded the Leatherhead company in 2004, which has developed Nimbus, a technology platform, to forecast temperatures and help make gritting decisions. Profits hit £4.5m in 2018, and in November that year private equity firm Total Capital Partners acquired a minority stake for an undisclosed sum.