BT Tower

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Original synthesis to sit alongside the encyclopedia article below. Not part of Wikipedia; verify facts on Wikipedia when precision matters.

The BT Tower is a Grade II listed iconic communications landmark located in Fitzrovia, central London, United Kingdom. Originally designed by architect Eric Bedford, it first opened to support national line-of-sight microwave telecommunications relay, and for decades was one of the most recognizable fixtures of London's central skyline, with multiple name changes over its operational history including the Post Office Tower and London Telecom Tower.

Key moments

1954First formal proposal for a central London tall telecommunications tower to accommodate rapidly growing demand for domestic long-distance telephone and television broadcast traffic
June 1961Construction work on the tower begins
1965The tower officially opens, holding the title of tallest building in the United Kingdom at 177m for its main habitable structure
1971A terrorist bomb explosion inside the tower leads to permanent full closure of all previously open public visitor amenities including the top-floor rotating restaurant and observation decks
1980The tower loses its status as the UK's tallest building when the NatWest Tower (later renamed Tower 42) is completed in the City of London
2024Owner BT Group finalizes the sale of the BT Tower to hospitality operator MCR Hotels, with plans led by Heatherwick Studio to redevelop the structure into a luxury hotel while preserving its protected historic exterior features

Mid-century modern public infrastructure cultural legacy

The BT Tower stands as one of the most prominent surviving examples of 1960s UK public service architecture, built at the dawn of the mass telecommunications era to solve a specific technical problem of line-of-sight microwave transmission. Its striking, unapologetically functional cylindrical design made it a staple of 1960s British pop culture, making cameo appearances in spy films, television series, and pop album artwork as a visual shorthand for modernist optimism and state-of-the-art technological progress.

Adaptive reuse precedent for obsolete telecommunications towers

The approved hotel redevelopment of the BT Tower offers a tested path forward for dozens of similar mid-century communications towers built across the world in the 1960s and 70s, many of which have lost their core technical purpose as fiber optic and satellite networks replace old microwave relay systems. The project's mandate to retain the tower's heritage features while opening previously inaccessible upper floors to the public for hospitality use revives its original role as a shared London landmark after more than 50 years of restricted, exclusive operational access.

location	London, United Kingdom

coordinates	51.5215°N, -0.1389°W

antenna spire	189 m‡R2R‡

roof	177 m

floor count	37

elevator count	2

architect	Eric Bedford

main contractor	Peter Lind & Company

owner	MCR Hotels

The BT Communication Tower,[3] more commonly known as the BT Tower, is a Grade II listed communications tower in Fitzrovia, London, England, owned by MCR Hotels. It has also been known as the GPO Tower, the Post Office Tower,[4] and the Telecom Tower. The main structure is 177 m high, with aerial rigging bringing the total height to 189 m.[2]

Upon completion in 1964, it was the tallest structure in London and remained so until 1980. Butlins managed a revolving restaurant in the tower from 1966 until 1980.[5] A 360° LED screen displays news across central London.[6]

The BT Tower was sold to MCR Hotels in 2024.[7]

History

Design and construction

The tower was commissioned by the 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 GPO microwave network.[8]

It replaced a shorter, 1940s steel lattice tower on the roof of the neighbouring Museum Telephone Exchange. The taller structure was required to protect the radio links' line of sight against tall buildings then planned in London. Links were routed via GPO microwave stations Harrow Weald, Bagshot, Kelvedon Hatch and Fairseat, and locations including the London Air Traffic Control Centre.[9][10]

In popular culture

The tower has appeared in novels, films and on television, including Smashing Time, The Bourne Ultimatum, Space Patrol, Doctor Who, V for Vendetta, 28 Days Later, 28 Weeks Later, The Union and Danger Mouse. It is toppled by a giant kitten in The Goodies 1971 King Kong parody Kitten Kong.[54][55][56]

It was referenced by the Dudley Moore Trio's track "GPO Tower" used in the soundtrack for Bedazzled in which it also appeared[57], as well as Cressida's track "Goodbye Post Office Tower Goodbye", released on the Asylum album in 1971.[58]

Secrecy

Information about the tower was designated an official secret and in 1978, journalist Duncan Campbell was tried for collecting information about such locations. The judge ordered the tower could only be referred to as "Location 23".[65]

It is often said that the tower did not appear on Ordnance Survey maps, despite being a 177 m tall structure in the middle of central London that had been open to the public.[66] However, this is incorrect; the 1971 1:25,000 and 1981 1:10,000 Ordnance Survey maps show the tower[67] as does the 1984 London A–Z street atlas.[68]

In February 1993, MP Kate Hoey used the tower as an example of trivia being kept secret, and joked that she hoped parliamentary privilege allowed her to confirm that the tower existed and to state its street address.

Gallery

External links

. Retrieved on 21 January 2015.

References

BT Tower SkyscraperPage.com, retrieved 26 June 2008^
We take an exclusive look behind the scenes at the BT Tower BT, retrieved 18 May 2020^
BT Communication Tower Historic England, retrieved 10 September 2022

building type
construction start date	1961
completion date	1964‡R1R‡
highest prev	Millbank Tower
highest next	NatWest Tower
highest start	1964
highest end	1980
highest region	the United Kingdom