Grangemouth Refinery is a mature oil refinery complex located on the Firth of Forth in Grangemouth, Scotland, currently operated by Petroineos. It is the only operating crude oil refinery in Scotland (following the cessation in 2014 of Bitumen refining activities at the Nynas AB Dundee Refinery), and currently one of the six remaining UK Refineries. It is reputedly the UK's second-oldest, supplying refined products to customers in Scotland, northern England and Northern Ireland, as well as occasionally further afield.