French media is reporting that new "standardised" fuel labelling is coming in as from next week (12 October) - I haven't seen any reference to this in British media, but the legislation is said to be Europe-wide (not just EU states) so presumably including UK whether Brexit or not.

Instead of “Unleaded” and “Diesel”, pumps will be labelled with standardised letters and numbers, corresponding to the type of fuel, and the amount of biofuel it contains (E5/E10 for petrol; B7/B10 for diesel).

A recipe for more misfuelling confusion!