The demolition of the original buildings in 1962 has been described as "one of the greatest acts of Post-War architectural vandalism in Britain" and is believed to have been approved directly by Harold Macmillan, the first of a line of Prime Ministers who championed motorway building. The replacement trainshed has a low, flat roof, making no attempt to match the airy style of London's major 19th century trainsheds. The attempts made to preserve the earlier building, championed by Sir John Betjeman, led to the formation of the Victorian Society and heralded the modern conservation movement. This movement saved the nearby high Gothic St Pancras station when threatened with demolition in 1966, ultimately leading to its renovation in 2007 as the terminus of HS1 to the Continent.