The air navigation order states that the holder of a Private Pilot's License (aeroplanes) is entitled to fly as pilot in command of any of the types or classes the occupant has on his license. However, the holder may NOT receive any remuneration for services as a pilot (accept for towing a glider, dropping parachutists or has a flight instructors rating)
Air Navigation Order Sections 1 Schedule 7 Part A Section 1