Never trust the Revenue

Once again I've been contacted by Her Majestys Revenue and Customer (formerly Inland Revenue) telling me that I haven't sent in a "self assessment" return for 2004/2005 tax year.

I had a problem with this early this year and thought I'd sorted it out having had about 5 phone conversations with a woman at the tax office and sending in a duplicate return and getting verbal confirmation from them that they'd got it.

Luckily my Accountant has a copy of the return so I'll need to have them send it again. Registered Post this time I think!