I'm sure I read somewhere that the Government may be seriously considering increasing further the E content in petrol above E10 in the future, possibly E15 then E20. Effectively it will force more and more ICE's off the road.
Not an issue if they use superunleaded E5? Per
https://www.gov.uk/guidance/e10-petrol-explained#about-e10-petrol What to do if your vehicle is not compatible with E10 petrol
Continue to use E5 petrol in the ‘super’ grade (97+ octane), which will remain available at many larger filling stations. Make sure you check the label before you fill up.
Note the warning on rubber fuel lines in
https://check-vehicle-compatibility-e10-petrol.service.gov.uk/manufacturer/Morgan - wonder if that applies to the M3W?
