Light maintenance services

“Light maintenance services” are defined in section 82(2) of the Railways Act 1993 as services of any of the following descriptions:
(a) the refuelling, or the cleaning of the exterior, of locomotives or other rolling stock;
(b) the carrying out to locomotives or other rolling stock of maintenance work of a kind which is normally carried out at regular intervals of twelve months or less to prepare the locomotives or other rolling stock for service.