It may not be exact and a little post date, but QE II’s revue of the fleet in 53 will give an idea of what ships were still around 8 years latter. On page 2 are a number of photos and you can count the carriers and on page 3 is the diagram of all ships. About 10 carriers I think starting with Eagle.
http://battleshiphmsvanguard.homestead.com/53Review1.html
what about all the crews in bomber command?
edited to add
And in the Express this W/E a list of 100 Great Britains had Slim as the only soldier from WW2.