Yes. Most 'ordinary' unleaded in the UK contains ethanol.
With 'Super unleaded' less so dependant on which part of the country you are in and which make fuel you use. Any Mogas you use in an LAA Permit aircraft needs to conform to EN228. Esso 'Super unleaded' conforms to EN228 and in the Midlands contains no ethanol currently if distributed from Kingsbury distribution centre, near Tamworth, to the petrol stations.
Ethanol is added, or not added, at the distribution centres around the UK and can vary depending on your location and make of fuel used. So your location can make it a lottery if ethanol is added or not to any fuel you may buy!
Last edited by Shoestring Flyer; 20th Jan 2017 at 09:07.