" the value of any default by that person which is a default falling within subsection (1)(b) above shall be taken to be equal to the amounts of any outstanding VAT less the amount of unpaid payments on account;"
"value added tax charged in accordance with [the VAT Act]” So section 59(1)(b) means, taking account of section 96 and on a literal construction: "…HMRC have not received the amount of VAT charged in accordance with [VAT Act] shown in the return as payable by the taxpayer in respect of that period"