Odd, I thought that the EU rules for electric transport not to need a license/registration was 250 watts and 20 km/h? this is 350 watt and 25km/h?
In the UK at the moment it is illegal to use these in a public place unless they are part of trial period of hire vehicles that at the moment are limited to 4 cities. They are classed as a Mechanically propelled vehicle and as such require insurance and a licence.