This exchange is from Planet Damnation. I am posting it here because it's so fabulously British it defies explanation to anyone who hasn't experienced Britishness at its finest. The setting is the first Gulf War.
RAF Wing Commander David Farquahar had a briefcase with a laptop containing the entire Gulf War briefing plans. Said briefcase was in an unmarked RAF car when Farquahar stopped at a used car lot in Acton (suburb of London) to look in their showroom.
The computer was returned by the thief with a note "Dear Sir, I am a common thief and I love my Queen and country. Whoever lost this should be bloody hung. Yours, Edward."
I find this to be utterly priceless.