Revenue and Customs: Correspondence Mr. Laws To ask the Chancellor of the Exchequer in which business areas within HM Revenue and Customs there were delays beyond target response times in processing correspondence in each of the last three months; and if he will make a statement. Dawn Primarolo HMRC aims to deal correctly and completely with 80 per cent. of post from customers within 15 working days of receipt. Validated results are only available annually.