Thunder Bolt
Silly old bat
Why on earth would you request HMRC pay you by cheque? Both Mrs SS and I have to do Self Assessments each year and nearly always one of us has overpaid tax - we provide our bank sort-code and account and the money gets paid in via the [same-day] faster payments method. Getting to a branch to pay a cheque in is a bit old fashioned these days and mostly avoidable [plus delay in funds actually being credited/cleared into your account too]
As my pension is paid by the ESPS it is on PAYE. HMRC messed up my code when I got my state pension, which isn't taxed at source. I told them it was too high, but they knew best.
Two years later they realised I had paid too much, and sent me a letter with a cheque attached. I didn't request anything.
Suitable explanation for you?