Family links to the Battle of Britain?

[Moggy]

I have a few links to the Battle of Britain. My Grandfather was an anti-aircraft gunner on the 3.7'' and Bofors gun during the battle. Serving all over Southern England especially during the blitz. My Gran had a story of being buzzed by a German aircraft during the battle whilst on her way to visit my Grandfather by train. She said it was 1 of the most scariest things she had ever known.
My other link was that my old house was built on the site of an old RAF station (Croydon).

*EDIT*
This is for DefiantMK1.
You'll probably already know about this but I've just flicked through a few books I have on the Defiant and in Alec Brew's book, The Turret Fighters, Defiant and Roc on page 75 is a picture of your great uncle with Plt Off Williams next to their Defiant in early 1941. If you haven't got the picture I'm more than happy to scan it in for you.