Not just Lyme Bay full of Valiant detritus. The sea bed off the eastern end of Akrotiri's runway has a fair few rusty JATO/RATO (whatever they used?) bottles from Valiants. Only about 20-30ft down.
Remember at least one "silver" Valiant at Finningley in late 1950s/early 60s, I think it was with Bomber Command Development Unit but may have been 18Sqn.