Most fuel stations in the UK will sell two grades of unleaded - standard 95 RON and super unleaded which is usually between 97 and 99 RON, including Shell V-Power, Total Excellium Unleaded and Tesco Momentum 99 which are 99 RON. BP did sell 102 RON fuel for a limited time at a small number of filling stations, but this has been discontinued. Generally speaking high octane fuels only bring tangible benefits for performance cars as the car's ECU will adjust the engine's parameters to get the most benefit from the higher octane. While conventional petrol cars and hybrids may benefit slightly from higher octane fuel, the performance gain is marginal considering the extra cost.

The reason it is not sold in the UK is likely to be a lack of demand, as BP's experiment with 102 RON fuel would suggest.