In summary: a bike that speeds above 25km/h, often without even the help of muscle propulsion, is not really a bicycle but an electric scooter and is also classified as such at a regulatory level. The Highway Code, in fact, places electric bikes in the L1eB category, the same as mopeds.
As with other autonomous vehicles, registration, approval, license plate, license and insurance are required to drive an electric bicycle. It is also mandatory to wear a helmet when riding. Finally, the electric bike must be equipped with a rear-view mirror and headlights. Another detail to take into consideration: the warranty of this vehicle expires.