All the targets I covered whilst on the Vulcan in the late 60s early 70s had a planned recovery airfield. None of the recovery airfields were in the UK however and some (most?) appeared a tad optimistic. I am led to believe that in later years this was not always the case.
I did hear mention that there had been a study made of the feasibility of mounting second strikes utilising recovered aircraft. It really does sound a bit of a long shot though on many counts. Maybe there is something in the files at Kew about this.
One mission we had was about a 460 mile penetration to Kiev and almost 600 miles exit to Turkey
We have something in common PN!
YS