Throttles are legal under the following criteria.
The throttle alone can drive the bike up to 4mph without the pedals turning forward. The rider should not be sitting on the bike.
The throttle can be used as a form of assistance regulator up to a speed of 15.5mph as long as the pedals are turning forward.
The throttle can be opened up to 15.5mph as long as the bike has been Type Approved and certificated as a 250W L1e-A low power moped, this is something we offer. This does not effect the status of your eBike in law as far as usage is concerned. UK Only. See our page on Full Throttle Ebikes for more information.