I am advised by the Revenue Commissioners that, following a joint process, Revenue and HM Revenue and Customs identified a new and more effective product to mark rebated fuels in Ireland and the UK. The new marker was introduced in each jurisdiction at the end of March this year, following consultation with the oil industry, and is used to mark all gas oil and kerosene to which a reduced rate of mineral oil tax applies. The introduction of the new marker, which is used in addition to existing dyes, provides a significant boost in the fight against illegal fuel laundering in both jurisdictions.