EngAL said' "My SIL tipped me off that the outlet village in Swindon gives a 10% discount card to military personnel on production of a 1250. I invariably get it on production of my RAFA ID card. May work elsewhere in the country?"
Yes, all of the UK McArthur Glen outlet villages give a discount brochure to the Armed Forces - just show your ID at the info desk.
(BTW, I'm not the BK 'operative' that Doodledog had the misfortune to meet at Castle Donington - bit of a long commute!)