http://www.legislation.gov.uk/id/uksi/1993/31

SCHEDULE 2INTERPRETATION OF REFERENCE TO AVAILABILITY OF SEAT BELTS

1.

For the purposes of these Regulations, in relation to a child riding in a vehicle,—

(a)

if any front seat in the vehicle (other than the driver’s seat) is provided with an adult belt, that belt shall be regarded as being available for him in the front of the vehicle unless the requirements of paragraph 2 are satisfied in relation to that person, that seat and that belt; and

(b)

if any rear seat in the vehicle is provided with an adult belt, that belt shall be regarded as being available for him in the rear of the vehicle unless the requirements of paragraph 2 are satisfied in relation to that person, that seat and that belt.