I have a couple of pictures yes. The ones of XF597 , ( G-BKFW ) have AH which is the initial of the former owner Alan House, it’s orginal marking was JM. The other is WW388 which served with 2 FTS and was coded Q F .
The book On the Wings of a Gull has arrived and it’s a brilliant source for all things Percival and Hunting. Thanks guys for pointing me in this direction.