Following the announcement from the government that E10 petrol will be rolled out in the UK from September 2021 I thought I had better check if this would affect the Cappo. Checking the handbook (page 1-2) it states that they are ok with up to 10% ethanol in the fuel. Good news!
If you have other vehicles produced prior to 2011 it is worth checking whether they are also ok. There is a checker on gov.uk which gives some information. Fortunately Suzuki made it easy to check by being clear in the handbook.
If you have a vehicle that is not compatible then, since Super-unleaded will be staying at E5, you will have to switch to that.