Dream to some, nightmare to others; that aside, blocking other than temporarily, for a bit of national subsidy blackmail, seems unlikely.
Didn't you if my mind serves me well, announce that you had it on “inside government” knowledge, that Boris would announce numerous big spend projects for Britain in January. Levelling up and all of that.
He best keep off the Beaujolais tonight then, as tomorrow is a big day, of Borisonian dimensions.