NOOooooooooooo! You've just dashed the hopes of hundreds if not thousands of motor homers UK wide!
Personally I think it will be May 2021!
Even the ever optimistic Boris is saying that it will be the end of July before all over 50's have been 'offered' a vaccination slot.
Which means that it will be 3 months after that date (which, with all due respects, is unlikely to be met) before the UK over 50's are covered.
The real aim would be to cover 80% of the over 50's UK population by Christmas 2021.
And whatever you can cover of the under 50's would be a Brucie Bonus.
Remember the UK is currently 6 weeks ahead of the rest of the EU, I would presume each country will be endeavouring to get to much the same place by early winter Flu/Covid season.
So even if you have had both your jabs, I dont see it being easy to get to France this summer, as the locals may not have had their jabs yet (or are 6 weeks behind)