US tech company has sued London mayor after he prevented it from working with Metropolitan policeSadiq Khan has agreed for his text messages and emails to be searched as part of a legal battle with Palantir, the high court has been told, after he prevented the US technology company from working with the Metropolitan police.The London mayor stepped in to block a £50m deal between Palantir and the Met in May, with the artificial intelligence developer suing Khan’s office over the decision. Cont