back in the early nineties, I had a bundle of fake 20's that I had acquired in Wrexham, about 4grand in all. Went to the local cop station one day with my shotgun certificate renewal form, and handed over £20 to pay for it. Stood waiting for 15 mins, till the cop came back, holding the £20 note up in the air and declaring " it looks like we may have a problem, Sir". Cold sweat ensued as I gaped at the obviously fake 20 that he was grasping in his sweaty paws. "What problem would that be", I barely managed to gasp out. " No-one in the station has got change of a 20 note", he says. Sensing that I may not after all be spending some time in ' the big hoose' I took it from him, telling him I would change it at the newsagents. Returned later with the correct money, not before I had gone home and bonfired the rest of them.