I remember reading about the silence met by an Armagnac producer when he was asked where he was from and replied Condom (Gers).
I discovered recently thanks to Gascony Local that besides these cultural vagaries, Condom (Gers) is home to Churchill's its own British grocer which must mean a lot of British expats live in the area.
If I am to trust its website, they offer everything from Heinz baked beans to Duchy original organic biscuits and of course trifle (pictured above).
The shop is located on Place Scipion Dupleix in Condom .
I am not sure what the opening hours are.
(* Trifle image from Churchill's website)