Afternoon
H
Hastings lad
, I assume that what you have are campaign awards, the '39 - '45 star, France and Germany star with the Dunkirk clasp, War Medal and Defence Medal? I believe there is also an award from the French Government for all Dunkirk survivors? The U.K. issued awards were issued to all service personnel, un-named and without paperwork. If your Grandad had any bravery awards, his name and service number will be engraved around the edge with a citation giving the where, when and why and possibly a copy of the entry in the London Gazette, this includes, though without a name, "mentioned in dispatches", an Oak leaf, diagonally across the award ribbon.
If your lucky enough to have your Gran, with her signed approval, you can apply for his service records, which as a still living family member, should be free. Have a look at the Government site, but if I remember correctly the surviving records are at RAF Innsworth in Gloucestershire. Whatever you have, be proud of your Grandad, and prouder that having 'done his bit', he came home.
All the best, and I hope you find what your looking for.