A Cambridge University intelligence group whose members include a glamorous Russian student has been dragged into the escalating row over the Trump campaign’s ​potential links to the Kremlin.

MPs have demanded an investigation into potential Russian interference in Britain amid fresh claims over the ties Michael Flynn – Mr Trump’s former national security adviser – has to Moscow.

Mr Flynn has requested immunity in exchange for testifying before the FBI and congressional committees who are investigating connections between the Trump campaign team and Russia.