Refusing to repatriate Shamima Begum and other British Isil brides and families will further the terrorist threat against the UK, senior Tories have warned. In a letter to Foreign Secretary Dominic Raab and Home Secretary Priti Patel, the four MPs – including three former ministers – said Britain should not “wash its hands” of the 40 Britons detained in camps for Isil fighters, jihadi brides and their children in northern Syria. The four – Andrew Mitchell, David Davis, Tom Tugendhat and Tobias Ellwood – warned that failure to take responsibility for them like other nations including the US under President Joe Biden would “necessarily create even more security risks for the UK in the future”. Their warning comes on the eve of tomorrow's Supreme Court judgement on whether Begum, who left London as a schoolgirl to join Isil in 2015, should be allowed back into the UK to challenge the removal of her British citizenship. Writing exclusively online for The Telegraph, Mr Mitchell, former international development secretary, said that irrespective of the judgement, leaving Begum, pictured below, and other Britons “swilling around in ungoverned space” had the potential to backfire not only in the region but on the streets of Britain.