An obscure bit of trivia perhaps, but AFAIK should one be visiting the UK from out of country or perhaps visiting the continent from residence in the UK and
riding a cycle they have brought with them, the lighting need only comply with the International Convention on Road Traffic (Vienna, Austria November 8, 1968), Chapter V Conditions for the Admission of Cycles and Mopeds to International Traffic, Article 44. It requires only:
Cycles without an engine in international traffic shall:
(a) Have an efficient brake;
(b) Be equipped with a bell capable of being heard at a sufficient distance, and carry no other audible warning device;
(c) Be equipped with a red reflecting device at the rear and with devices such that the cycle can show a white or selective-yellow light to the front and a red light to the rear.Notes:
1. Your average law enforcement officer is almost certain to be entirely ignorant of the International Convention on Road Traffic.
b. Always strive to be a polite guest!
