I note some readers seem to get annoying multiple electricity bills but my story is a happy one.

For the past 18 months, I have received the regular bill from my electricity supplier, whose computer seems to have flipped its lid and gone into reverse, giving me money by way of credits for using electricity each quarter.

At present, the company "owes" me about £200. But I am a realist and expect, in the next ten years, to hear a heavy thud from the letter-box.

Anyone reading this would probably expect to see my name and address on it but you now know you are wrong.

-Grateful, Brighton