Since the closure of the Milford Haven Refinery in 2014 the UK has been a net importer. Structurally, the UK market is surplus in gasoline and deficit in middle distillates. Fully integrated downstream business models have been increasingly replaced with wholesaler-dealer models, driven by the rapid growth of the dealer-owned retail sector. Five large dealer groups now dominate, purchasing sites that oil companies divested. The UK retail fuel market remains highly competitive, characterised by the aggressive price discounting strategies of the hypermarket groups. Diversification of non-fuel marketing is going to be key to long-term profitability of the UK service station sector.