I found a �20 note on the floor of a convenience store and handed it to the shopkeeper. When I went into the store the following day he told me that a very elderly lady had come into his shop, in great distress, because she'd lost �20 from her pension when she's shopped in his store earlier that day. (He did, of course, return the money to her).
On another occasion I found a �10 note outside a sub post office. I handed it in to the manager, who insisted on taking my name and address. Three months later I received a letter, by registered post, containing the unclaimed tenner.
Chris
PS: Perhaps Elvis68 should stick to posting in the News section? That seems to be where all the other racists and xenophobes hang out.