Britain's biggest police force was reeling tonight after an undercover investigation showed racist officers calling for immigrants to be shot. A screengrab from the BBC's undercover report into Charing Cross Police Station. Sir Mark Rowley is pictured speaking to Sky News in July this yearOfficers from Charing Cross Station were recorded as part of an undercover investigation . Tonight, Sir Mark said the Charing Cross custody team had been disbanded and moved elsewhere due to the Panorama allegations. 'A series of urgent changes have been put in place at Charing Cross police station and across the Met with more to follow.