My driver's side one fell out at Sainsbury's petrol station this morning and smashed into lots of pieces. Old man behind me commented "oooooh that's not good", which I found very helpful. Had to call the cashier to come and sweep up the pieces, and then went to local car accessories store, who phoned round 4 suppliers to get a replacement for me which should be here by 4pm this afternoon. They will also fit it for me, for the grand total of £20 ! Really grateful they can do it so fast as have a close to 400 mile round trip coming up tomorrow, which would be a bit akward without my wing mirror.