Some of those fast jet Squadrons may of course have RN number plates, although as they will work for HQ 1 Grp they may be considered RAF by some. The Fleet Air Arm manning situation is seen as healthy compared to some of the other branches, although it's all relative!
Agrreeing with CGB above, with Chinook now regularly going to sea, F-35B going to sea and even talk of trying to embark Puma 2(!) I can see the RAF spending a lot more time at sea in the near future! No wonder they're desparate to get some F-35A in the future....