Regulation 4(28)
1. On the Park roads in Bushy Park, Greenwich Park, Hyde Park (except for the Serpentine Road), The Regent’s Park, Richmond Park and St. James’s and The Green Parks, at a speed not exceeding 30 m.p.h.
2. On the Serpentine Road in Hyde Park, and on the Park road from Kingston Gate leading to the Home Park Golf Club in Hampton Court Park, at a speed not exceeding 15 m.p.h.
3. On any Park road (other than one mentioned in paragraphs 1 or 2 above) at a speed not exceeding 10 m.p.h.