The pitbikes, quad bikes, electric bikes and electric balance bikes (unless specifically stated) are not for road use and can only be used on private land with the owners permission.

Full Details – https://commonslibrary.parliament.uk/research-briefings/cdp-2022-0097/#:~:text=The%20Road%20Traffic%20Act%201988,permission%20has%20not%20been%20given.