Rules for cyclists
These rules are in addition to those in the following sections, which apply to all vehicles (except the motorway section on page 85). See also page 118 - You and your bicycle.
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At night your cycle MUST have white front and red rear lights lit. It MUST also be fitted with a red rear reflector (and amber pedal reflectors, if manufactured after 1/10/85). White front reflectors and spoke reflectors will also help you to be seen. Flashing lights are permitted but it is recommended that cyclists who are riding in areas without street lighting use a steady front lamp.
Law RVLR regs 13, 18 & 24