BT Tower

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(Redirected from Post Office Tower)

Image:BT Tower 2004.jpg The BT Tower in London, previously the Post Office Tower and also the London Telecom Tower, is a strikingly tall cylindrical building at 60 Cleveland Street, W1 (London Borough of Camden). The main structure is 175 metres (574 feet) tall, with a further section of aerial bringing the total height to 188 metres (620 feet).

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History of the Post Office Tower

The tower was commissioned by the General Post Office (GPO). Its primary purpose was to support the microwave aerials then used to carry telecommunications traffic from London to the rest of the country.

The tower was designed by the architects of the Ministry of Public Building and Works: the chief architects were Eric Bedford and G. R. Yeats. Typically for its time, the building is concrete clad in glass. The narrow cylindrical shape was chosen because of the requirements of the communications aerials: the building will shift no more than 25 cm (10 inches) in wind speeds of up to 150 km/h (95 mph). Initially the first sixteen floors were for technical equipment and power, above that was a 35 metre section for the microwave aerials, and above that were six floors of suites, kitchens, technical equipment and finally a gridwork aerial. To prevent heat build-up the glass cladding was of a special tint. The construction cost was £2.5 million.

Construction began in June 1961. The tower was topped out on July 15, 1964 and it was operational from October 8, 1965. The building contractors were Peter Lind & Company.

The tower was officially opened to the public on May 16, 1966 by Tony Benn and Billy Butlin. As well as the communications gear and office space there were viewing galleries, a souvenir shop, and a slowly rotating restaurant, the "Top of the Tower", on the 34th floor, operated by Butlins. It made one revolution every 22 minutes. An annual race up the stairs of the tower was established and the first race was won by UCL student Alan Green.

A suspected IRA bomb exploded in the roof of the men's toilets at the Top of the Tower on October 31, 1971 and it was subsequently closed to the public for security reasons. The restaurant closed in 1980 when Butlins' lease expired and non-BT-approved access to the building ceased. In 1981 it was superseded as the tallest building in Britain by the NatWest Tower (renamed Tower 42).

The London BT Tower today

Image:BT Tower - from base - London - 020504.jpg Image:BT tower 300106.JPG When the GPO telecommunications services were split off in 1981 (in advance of the 1984 privatisation) the tower was renamed the London Telecom Tower. After the rebranding of the company in 1992 it became the BT Tower. The building is still not open to the public. The restaurant has been re-opened, and is now used by BT for corporate sponsorship events and promotions: since the re-discovery of spare parts for the mechanism, they even rotate it occasionally. Occasional broadcasts are made from the top of the tower, including BBC Radio 1 DJ Chris Moyles on his birthday, 22nd February 2006.

The tower is still in use, and is the site of a major UK communications hub. Fibre optic links have replaced microwave links for most mainstream purposes, but the tower is still used for microwave links. The base of the tower contains the TV Network Switching Centre which carries broadcasting traffic and relays signals used by the BBC and other television broadcasters.

A recent renovation installed coloured lighting projecting onto a new 360-degree light panel, extending out from the old light boxes, bearing the company logo, as part of BT's 'connected world' corporate styling. Seven colours are progammed to vary constantly at night and are intended to appear as a rotating globe. The success of this is debatable but the building's night appearance is now more distinctive. The tower has always been a useful late-night navigational beacon for nearby residents, especially the numerous university halls within walking distance.

Until the mid 1990s, the building was officially a secret, and did not appear on official maps. Indeed, even by taking a photo of it you were breaking the Official Secrets Act. Its existence was finally "confirmed" by Kate Hoey, MP, on 19 February 1993: "Hon. Members have given examples of seemingly trivial information that remains officially secret. An example that has not been mentioned, but which is so trivial that it is worth mentioning, is the absence of the British Telecom tower from Ordnance Survey maps. I hope that I am covered by parliamentary privilege when I reveal that the British Telecom tower does exist and that its address is 60 Cleveland Street, London." [1]

The BT Tower was given grade II listed building status in 2003.

Interestingly, the tower is so tall that an Act of Parliament was required to vary fire regulations, allowing the building to be evacuated by using the lifts - it is the only building in the country to hold this status.

Appearances in fiction

See also

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