The Road Vehicles Lighting Regulations 1989 already defines a pedal cycle as:
The term 'motor vehicle' is defined in section 185(1) of the Road Traffic Act 1988 and section 136(1) of the Road Traffic Regulation Act 1984 as
The definition used by The Royal Parks and Other Open Spaces (Amendment) etc. Regulations 2010 for a 'vehicle' is
Clearly, a pedal cycle is already considered not to be propelled by mechanical power therefore cannot be judged to be a "motor vehicle" under general road traffic acts nor a "vehicle" under the Royal Parks Regulations.
In my opinion the police were wrong to charge him and court was wrong to convict the cyclist of speeding.
GC