Law changes for UK throttle operated bikes
There still seems to be some unclear definitions of the new laws surrounding throttle operated and power assisted bikes.
Throttles may only operate a bike (without pedals turning) up to 6KPH / 3.7MPH, to be legal to sell from 01-01-2016.
Read more on: https://www.juicybike.co.uk/uk-europe-ebike-law
Be aware that many articles and advertisements may still refer to the previous 15MPH limit. Although sold, many bikes may need to be limited to comply the latest laws.