Westcountry MPs including Joan Vickers, Douglas Marshall and Ian Fraser look at the Independent Television Authority’s new Caradon Hill transmitting station and control room on Bodmin Moor near Minions. The guyed mast was built and opened on 29 April 1961 bringing ITV to Cornwall and some parts of Devon on a 405-line Very High Frequency (VHF) Band III system. In 1964 the General Post Office allocated frequencies for 625-lined television for the four national networks.