Can I find out if Grandad was evacuated from Dunkirk?

[soupdragon]

My mother was always insistent that her Dad was evacuated from the beach at Dunkirk. I'm not sure whether I can apply for his service records as I'm only his granddaughter (so not Next of Kin). Is there any other way of finding out if Mum was right?

[KGarrad]

If he died more than 25 years ago, you don't need to be next-of-kin to apply

If he died within the last 25 years then you can still apply, but you will need NOK's permission. You will also get less information.

In either case you will need a Death Certificate (to prove when he died).