World Customs Organisation Mr. Oaten To ask the Chancellor of the Exchequer which Minister is responsible for representing the Government’s interest at the World Customs Organisation. Mr. Timms The World Customs Organization (WCO) is the only intergovernmental organisation with competence on Customs Issues. HM Revenue and Customs officials usually represent the UK’s interests at WCO. I am the Minister responsible for Customs policy, and I am accountable to Parliament for HMRC.