FYI in case it happens to you...
Had the AA out last week cos the fuel filler cap didn't open when I pressed the switch on the centre console. Turned out that the connections to the filler cap solenoid had come loose. You can access the fuel filler cap solenoid by removing the panel that gives access to the real lights on the driver's side inside the boot. Joggle the connection and it's working again. Common VAG fault apparently.
Had the AA out last week cos the fuel filler cap didn't open when I pressed the switch on the centre console. Turned out that the connections to the filler cap solenoid had come loose. You can access the fuel filler cap solenoid by removing the panel that gives access to the real lights on the driver's side inside the boot. Joggle the connection and it's working again. Common VAG fault apparently.