Not a very hot deal as such but I took about £20 of copper into Morrisons the other day to one of those machines that counts it for you and charges upto 8.9% for the privelidge!
The machine was full so a member of staff told me you can avoid this by feeding the coins into the dump tray on the self service checkouts, the till will count the money and deduct it from your shopping without charging you. Note this will only work on the Morrisons self service tills and not self service tills in Tesco, Asda etc.
Like I say a small deal but one which will save you some money, plus you dont have to sort the coins out just dump it in and away you go.
I hope this benefits someone!