I've been getting those alleged HMRC e-mails for a few weeks now, all went straight to deleted items, unopened
A few months back there was the huge song and dance about HMRC miscalculating peoles tax and many were going to recieve around £1500 back payment, whereas others would have to pay their underpayment. I got my letter last week. Apparently I owe them £1054. BAstards
I've still to check it though as it relates to car and fuel allowances and previous experience has shown they often get them wrong