In order to maximise your options, I'd get an EASA PPL. It's 'training as required' and a test (then some money to the CAA!) Go to your local school and I'm sure they'd be pleased to help.
Then go to the microlight school and get an instructor to sign your logbook. You can then fly the C42 on your EASA licence.
If you don't want to do any SEP flying for the time being, no problem, just do a test every 2 years to keep it current, then if you do change your mind, you've the option.
TOO