London Underground stations that are listed buildings which he described as his "brick boxes with concrete lids", many of which are listed, five at Grade II*. Holden's design for the Underground's headquarters building at 55 Broadway including avant-garde sculptures by Jacob Epstein, Eric Gill and Henry Moore, incorporates St James Park station and is listed Grade I. London Underground stations that are listed buildings The London Underground is a metro system serving a large part of Greater London and parts of Buckinghamshire, Hertfordshire and Essex. Seventy-one of the 270 London Underground stations use buildings that are on the Statutory List of Buildings of Special Architectural or Historic
M25 motorway opened in 1986 traffic levels exceeded the maximum design capacity and in 1990 the Secretary of State for Transport announced plans to widen the whole of the M25 to four lanes. By 1993 the motorway, which was designed for a maximum of 88,000 vehicles per day, was carrying 200,000 vehicles per day. 15% of UK motorway traffic volume was on the M25 and there were plans to add six lanes to the section from Junctions 12 to 15 as well as widening the rest of the motorway to four lanes. In parts, particularly the western third this plan went ahead,