The cynic in me suspects they’re looking to cut this now as they can fall back on covid as a justification, in much the same way as some of the decisions taken under post-2008 austerity were political rather than economic. There will be many opponents of rail projects within the government, though I suspect Johnson isn’t one of them given his love of grand schemes. He’ll probably demand they call it the ‘Churchill Line’ or something crass and clumsy like that though.