The Crystal Palace transmitting station, officially known as Arqiva Crystal Palace, is a broadcasting and telecommunications site in the Crystal Palace area of the London Borough of Bromley, England (). It is located on the site of the former television station and transmitter operated by John Logie Baird from 1933. The station is the eighth-tallest structure in London, and is best known as the main television transmitter for the London area. As such, it is the most important transmitter in the UK in terms of population covered. The transmitter is owned and operated by Arqiva. History and development The station was constructed in the mid-1950s among the ruins of the Crystal Palace. The Aquarium on whose site it stands was destroyed in 1941 during the demolition of the Palace's north water tower. (John Logie Baird's earlier transmitter and TV studios were a separate development at the other end of the Palace and perished with it in 1936.) Its new tower was the tallest structure in London until the topping-out of One Canada Square at Canary Wharf in 1990. The first transmission from Crystal Palace took place on 28 March 1956, when it succeeded the transmitter at Alexandra Palace where the BBC had started the world's first scheduled television service in November 1936. In November 1956 the first colour test transmissions began from Crystal Palace, relaying live pictures from the studios at Alexandra Palace after BBC TV had closed down for the night. In May 1958 the first experimental Band V 625-line transmissions started from Crystal Palace. This tower was designed and built for BBC by British Insulated Callender's Construction Co. Ltd., with steelwork fabrication by Painter Brothers Ltd. of Hereford. The tower was required to transmit television programmes with good reception in 1957, and has a total height of . The base of the tower is to a side, and it rises in twelve diminishing panels to a square platform at a height of . The tower was constructed using two masts as derricks, one and the other high, in conjunction with a winch. At the time, a 16mm film of the construction by BICC was produced; this was available on loan from the BICC Film Library. Innovations The transmitter was the first in the UK to broadcast (experimentally) on 625 lines (UHF) in 1962–1964, which it did on Channel 44, using a modified version of the SMPTE optical monochrome