But less pleasing is that some Brexiteers including Ian Duncan Smith are reported to have been trying to persuade Hungary and others to veto any request to the EU for an extension. So much for hating how Brussels can overrule the UK Parliament.

A total misunderstanding of what is at stake:
As things stand we crash out on the 29th of this month.Regardless of what Parliament may vote in the meantime, only a changer in the law can negate this. There is not sufficient time to frame the required legislation,debate it in both houses and obtain Royal Assent. That is the reality.
An extension beyond the date of the European elections means the UK quota of MEPs must be elected.(This could be quite entertaining as the seats have already been re-allocated.)
More significantly, an extension gives the remainiacs more time to plot and plan their treasonous betrayal of the democratic will of the people.