Looking at what Shell are currently saying, V Power remains unaffected.
https://www.shell.co.uk/motorist/e10-petrol.html
In September 2021, the standard petrol/unleaded/Shell FuelSave grade ( or main grade) in the UK will become E10, in line with government mandate. E10 petrol contains up to 10% renewable ethanol, compared to 5% currently, which is added to help reduce CO2 emissions1 , according to the Department for Transport.
E10 petrol is compatible with almost all (95%)1 petrol-powered vehicles on the road today, including all cars built since 2011. If your vehicle or equipment is not compatible with E10 fuel, you will still be able to use E5 by purchasing Shell V-Power grade petrol from most Shell service stations. At Shell forecourts, we will clearly label petrol as either E10 or E5. The change in fuel only applies to petrol; diesel fuel will not be changing.