Not changed since 2010. "Pedal Bicycles (Safety) Regulations 2010 came into force on 6 April 2010."
Requirements below do not apply to bicycles being supplied/sold:
1) with a saddle which can't be adjusted to higher than 21"
2) 'not new' ie used
3) has no brakes (track bike)—
4) is a bespoke bike for competitive use
Supply of assembled bicycles
Provision 4.—(1) Subject to paragraph (2), a person must not supply a bicycle unless the requirements of paragraphs (3) to (12) of this regulation are satisfied.
(2) This regulation does not apply to the supply of a bicycle with unassembled parts (whether wholly or partially). [Comment: pedals not fitted would probably not satisfy the criterion: "unassembled" - so a pair of cheap pedals (satisfying requirements of (12) below is fitted or included for notional fitting.]
(3) The bicycle must be
fitted with a [bicycle]
bell
(4) [Brake lever/cable set up: right = front; left = rear]
(5&6) Retro reflective material or a retro
reflector (or a combination) must be attached to, or incorporated in, the
front wheel or tyre [and the rear wheel/tyre] so that light is capable of being reflected to both sides of the bicycle.
(7) [If the bike design means you can't achieve (6)], [showing to both sides] retro reflector may be fitted to the frame of the bicycle . . .
(8)
(9)
(10) The bicycle must be fitted with—
(a)a [front] wide angle retro reflector; or
(b)a lamp to the front, . . .
(11) A wide angle retro
reflector must be fitted
to the rear of the bicycle in a manner which complies with the requirements of the Lighting Regulations relating to an obligatory rear retro reflector.
(12) A retro
reflector must be fitted
to each of the
pedals of the bicycle in a manner which complies with the requirements of the Lighting Regulations relating to an obligatory pedal retro reflector.