“The underpayment was drawn to the attention of HMRC by me and a request be made that it be paid through my PAYE at the same time. I received no response from HMRC to that request despite reminders from my agent. I did not receive any notification from HMRC that I would be subject to a surcharge. Once I was made aware that the request for phased payment was unlikely to be granted, following a telephone call made by myself to HMRC, I made immediate payment”