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This article is about the BT Tower in London. For other uses, see BT Tower (disambiguation) and Telecom Tower (disambiguation).
BT Tower
BT Tower-1.jpg
BT Tower from Conway Street
Tallest building completed in London in the 1960s[1][2]
General information
Type Offices[2]
Location London, United Kingdom
Coordinates 51°31′17″N 0°08′20″W / 51.5215°N 0.1389°W / 51.5215; -0.1389Coordinates: 51°31′17″N 0°08′20″W / 51.5215°N 0.1389°W / 51.5215; -0.1389
Construction started 1961
Completed 1964[2]
Antenna spire 191.0 metres (626.6 ft)
Roof 177.0 metres (580.7 ft)
Technical details
Floor count 37
Lifts/elevators 2
Design and construction
Architect Eric Bedford
Wide-angle view of the tower and its base from Cleveland Mews in August 2012
BT Tower from Queen's Tower

The BT Tower is a communications tower located in Fitzrovia, London, owned by BT Group. It has been previously known as the Post Office Tower, the London Telecom Tower and the British Telecom Tower. The main structure is 177 metres (581 ft) tall, with a further section of aerial rigging bringing the total height to 191 metres (627 ft). It should not be confused with the BT Centre (the global headquarters of BT). Its Post Office code was YTOW.

In 1962, while still under construction, the BT Tower overtook St Paul's Cathedral to become the tallest building in London. Upon completion it overtook the Millbank Tower (which had been constructed faster) to once again become the tallest building in both London and the United Kingdom, titles it held until 1980, when it in turn was overtaken by the NatWest Tower.


20th century[edit]

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, as part of the British Telecom microwave network.

It replaced a much shorter steel lattice tower which had been built on the roof of the neighbouring Museum telephone exchange in the late 1940s to provide a television link between London and Birmingham. The taller structure was required to protect the radio links' "line of sight" against some of the tall buildings in London then in the planning stage. These links were routed via other GPO microwave stations at Harrow Weald, Bagshot, Kelvedon Hatch and Fairseat, and to places like the London Air Traffic Control Centre at West Drayton.

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. Typical 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 centimetres (10 in) 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 cantilevered steel lattice tower. 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, and owing to the building's height and its having a tower crane jib across the top virtually throughout the whole construction period, it gradually became a very prominent landmark that could be seen from almost anywhere in London. In August 1963 there was even a question raised in Parliament about the crane. Doctor Reginald Bennett MP asked the Minister of Public Building and Works how, when the crane on the top of the new Post Office tower had fulfilled its purpose, he proposed to remove it. Mr Geoffrey Rippon replied, "This is a matter for the contractors. The problem does not have to be solved for about a year but there appears to be no danger of the crane having to be left in situ."[3]

The tower was topped out on 15 July 1964 and officially opened by the then Prime Minister Harold Wilson on 8 October 1965. The main contractor was Peter Lind & Co Ltd.[4]

The tower was originally designed to be just 111 metres (364 ft), and its foundations are sunk down through 53 metres of London clay and are formed of a concrete raft 27 metres square, a metre thick, reinforced with six layers of cables on top of which sits a reinforced concrete pyramid.[5]

The tower was officially opened to the public on 16 May 1966 by Tony Benn and Billy Butlin. As well as the communications equipment and office space there were viewing galleries, a souvenir shop, and a 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. Tony Benn also designated the tower a mascot of UCL after lobbying by students. Comedian Pat Condell washed dishes in the kitchen for his first job.[6]

A bomb, responsibility for which was claimed by the Provisional IRA,[7] exploded in the roof of the men's toilets at the Top of the Tower restaurant on 31 October 1971. The restaurant was closed to the public for security reasons in 1980, the year in which the Butlins' lease eventually expired. Public access to the building ceased in 1981. The Tower is sometimes used for corporate events, but the closure of the Tower restaurant to the public means London has no revolving restaurant of the type common in major cities throughout the world.

21st century[edit]

Panoramic view from BT Tower in the Evening.

The tower is still in use, and is the site of a major UK communications hub. Microwave links have been replaced by subterranean fibre optic links for most mainstream purposes, but the former are still in use at the tower. The second floor of the base of the tower contains the TV Network Switching Centre which carries broadcasting traffic and relays signals between television broadcasters (including the BBC), production companies, advertisers, international satellite services and uplink companies. The outside broadcast control is located about the former revolving restaurant, with the kitchens on floor 35.

A renovation in the early 2000s introduced a 360° coloured lighting display at the top of the tower. Seven colours were programmed to vary constantly at night and intended to appear as a rotating globe to reflect BT's "connected world" corporate styling. The coloured lights give the tower a distinctive appearance on the London skyline at night. In October 2009, a 360° full-colour LED-based display system was installed at the top of the tower, to replace the previous colour projection system. The new display, referred to by BT as the "Information Band", is wrapped around the 36th and 37th floors of the tower, 167 m (548 ft) up. The display comprises some 529,750 LEDs arranged in 177 vertical strips, spaced around the tower. The display is the largest in the world of its type,[8] occupying an area of 280 m2 (3,000 sq ft) and with a circumference of 59 m (194 ft). On 31 October 2009 the screen began displaying a countdown of the number of days until the start of the London Olympics in 2012.

In October 2009, The Times reported that the rotating restaurant would be reopened in time for the 2012 London Olympics.[9] However, in December 2010, it was further announced that the plans to reopen had now been 'quietly dropped' with no explanation as to the decision.[10]

The BT Tower was given Grade II listed building status in 2003. Several of the defunct antennas located on the building could not be removed unless the appropriate listed building consent was granted, as they were protected by this listing. In 2011 permission for the removal of the defunct antennas was approved on safety grounds as they were in a bad state of repair and the fixings were no longer secure.[11] In December 2011 the last of the antennas was removed leaving the core of the tower visible.[12]

Entry to the building is provided by two high-speed lifts which travel at 7 metres per second (16 mph), reaching the top of the building in under 30 seconds. An Act of Parliament was passed to vary fire regulations, allowing the building to be evacuated by using the lifts – unlike other buildings of the time.[13]

The tower is being used in a study to help monitor air quality in the capital. The aim is to measure pollutant levels above ground level to determine their source. One area of investigation is the long-range transport of fine particles from outside the city.[14]

Appearances in fiction[edit]

Model of BT Tower in Legoland Windsor
  • In Sky1's adaptation of The Runaway the IRA bombing of the tower is featured in episode 4.
  • Large portions of the 1966 Doctor Who serial The War Machines were set in and around the tower.
  • In the 1967 film Smashing Time it appeared to spin out of control and short-circuit the whole of London's power supply.
  • The tower is featured in Stanley Donen's 1967 film Bedazzled as a vantage point from which Peter Cook, playing Satan, launches various forms of mischief.
  • The tower is featured in the most famous scene in The Goodies when it is toppled over by Twinkle the Giant Kitten in the episode Kitten Kong. This scene was included in the title sequence of all later series.
  • The tower is destroyed by an apparently alien robot from Mars – in fact a device operated by Baron Silas Greenback – in an episode of Danger Mouse.
  • In Alan Moore's graphic novel V for Vendetta the tower is headquarters for both the "Eye", and the "Ear", the visual and audio surveillance divisions of the government. The tower is destroyed through sabotage. It is also featured in the film adaptation although it is not destroyed. It is renamed Jordan Tower in the film and is the headquarters of the "British Television Network".
  • The tower is destroyed in the James Herbert novel The Fog by a Boeing 747 whose captain has been driven mad by fog.
  • It appears on the cover of, and features in, Saturday by Ian McEwan.
  • Frank Muir's short story "The Law Is Not Concerned With Trifles" is set in the tower's revolving restaurant.
  • In Patrick Keiller's film London (1992) the narrator claims the tower is a monument to the love affair between Arthur Rimbaud and Paul Verlaine, who lived nearby.
  • The bombing is a central plot feature of Hari Kunzru's 2007 novel My Revolutions, in which the bomb is the work of political radicals who are never caught.
  • In Daniel H. Wilson's 2011 novel, Robopocalypse the tower is used by the sentient artificial intelligence named Archos to control and jam satellite communications.

See also[edit]


  1. ^ "BT Tower". Emporis.com. Retrieved 2008-06-26. 
  2. ^ a b c "BT Tower". SkyscraperPage.com. Retrieved 2008-06-26. 
  3. ^ http://hansard.millbanksystems.com/written_answers/1963/aug/02/post-office-tower-crane#S5CV0682P0-03632
  4. ^ Post Office Tower
  5. ^ "BT Tower: serving the nation 24 hours a day", BT, 1993
  6. ^ "FAQ". Patcondell.net. 27 February 2008. Retrieved 2012-04-13. 
  7. ^ "BBC ON THIS DAY - 31 - 1971: Bomb explodes in Post Office tower". BBC News. 3 April 2007. Retrieved 2009-12-31. 
  8. ^ "BT Tower of power: World's biggest LED screen set to light up the night". 2009-10-31. 
  9. ^ Goodman, Matthew (1 November 2009). "High times as BT reopens its revolving restaurant". The Times (London). Retrieved 2010-04-27. 
  10. ^ http://londonist.com/2010/12/bt-tower-restaurant-wont-re-open.php
  11. ^ "London's BT Tower to lose dish-shaped aerials". BBC News. 2011-08-30. Retrieved 30 August 2011. 
  12. ^ "Give it a farewell reception: Last aerial dish from iconic BT Tower is removed". Daily Mail. 2011-12-21. Retrieved 21 December 2011. 
  13. ^ "London Telecom Tower". Retrieved 2011-03-18. 
  14. ^ BT Tower in pollution study[dead link]

External links[edit]

Preceded by
Millbank Tower
Tallest Building in the United Kingdom
Succeeded by
NatWest Tower
Preceded by
Millbank Tower
Tallest Building in London
Succeeded by
NatWest Tower

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/BT_Tower — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
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844 news items

Fri, 17 Oct 2014 14:45:00 -0700

The film takes viewers back to the swinging '60s, when Londoners could ride up to the BT Tower's 34th floor (35th for a cocktail), grab a table, and get a 360-degree view of the city while paying way too much for everything. As the narrator tells us ...

TechWeekEurope UK

TechWeekEurope UK
Thu, 30 Oct 2014 03:52:30 -0700

BT tower Two fifths of the Openreach additions were secured by third party providers like EE, Sky and TalkTalk, something which BT claims demonstrates the competitiveness of the UK fibre broadband market. However BT's competitors are unlikely to agree ...

Hemel Gazette

Hemel Gazette
Thu, 30 Oct 2014 01:26:15 -0700

Julea will be taking on the terrifying task of climbing 842 steps up the BT Tower tomorrow –which is Halloween itself. She has so far raised almost three quarters of her £200 target, and will of course carry out the frightening feat in full fancy dress ...
Wed, 29 Oct 2014 08:00:00 -0700

“Only the distant silhouette of the BT tower and distant buzz of the M6 reminding us how close the nature reserve is to the city centre." A 3D model of the new proposed RSPB centre at Sandwell Valley A 3D model of the new proposed RSPB centre at ...


Thu, 23 Oct 2014 19:13:45 -0700

The BT tower displayed the Queen's tweet for all to see, scrolling the message on the information board that runs around the London landmark. Gavin Patterson, chief executive of BT Group, which is the lead sponsor of the new gallery, said: "This tweet ...


Fri, 24 Oct 2014 03:58:48 -0700

The Queen has sent her first-ever tweet - and it has been broadcast on the BT Tower. The monarch used the handle @BritishMonarchy to open a £15.6 million communications exhibition at the Science Museum. We're proud to be part of a royal first.


Wed, 08 Oct 2014 01:04:13 -0700

The Post Office (now BT) Tower was officially opened on 8 October 1965 by the prime minister, Harold Wilson – who made a telephone call to the Lord Mayor of Birmingham. On 19 May 1966, the tower was opened to an eager public by Tony Benn, then the ...
Fri, 03 Oct 2014 04:32:37 -0700

If we did that, then the Millbank Tower, BT Tower and Tower 42 (to give them their modern names) would also make an appearance. At this point, real pedants can wrangle over whether to include communication masts and spires in the measured heights, but ...

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