By Lizzy Buchan Rishi Sunak has been warned that “playing footsie” with Nigel Farage’s Reform UK will lead to Tory wipeout by a former Conservative chairman. The embattled Prime Minister is under pressure after the Tories suffered two humiliating by-election defeats last week. Voters abandoned the Conservatives in both Kingswood and Wellingborough, handing twin triumphs to Keir Starmer’s party. There was also a rise in support for Reform in both contests, with the Farage-founded outfit coming third in Wellingborough with 13% of the vote. Mr Sunak is under pressure from panicking right-wingers …