T he hall was packed with rightwing radicals when Louis Mosley heralded a coming revolution. Just as Oliver Cromwell – that “crusader for Christ and liberty” – routed King Charles I’s royalists, “a similar revolution is brewing today”, said the UK and Europe boss of Palantir . Globalism’s “twilight” was upon us, he said in a speech dotted with admiring mentions of the podcaster Joe Rogan and “Elon’s Doge”.

It was not a typical peroration for a big UK government contractor with more than £600m in deals with the NHS, the Ministry of Defence and police. But Palantir, the world’s most controversial tech company, is no typical contractor.…