I was shocked when I discovered they retired the Harrier FR2.
However in this scenario South Atlantis cover could be provided from the Falklands and Mid Atlantic cover from Ascension Island by Tornado F3’s or the new Typhoons.
But there would be points, as they passed, where the Venezuelan aircraft could maximize their legs while the UK aircraft were at the end of theirs. It would be dicey without strong caiier task force fleet air defense. I believe the US could and should use a Nimitz and its escorts for the additional scurity.