Benns Surender bill compels Boris to get a deal by the 17th yesterday, or ask for an extension right ? So by my reckoning Boris no longer has to ask for an extension because he has fulfilled his obligation, he got a deal. Wether or not it is ratified by parliment, is another days work, but he has fulfilled the terms of the Benn mandate which was to get a deal by the 17,or ask for an extension