1SThe construction, alteration, repair and maintenance of railways, tramways, trolley vehicle systems and other transport systems within section 1(1)(a), waterways, roads, watercourses, tunnels, bridges, buildings and other structures.
Commencement Information
I1Sch. 1 para. 1 in force at 28.12.2007 by S.S.I. 2007/516, art. 2