>>11854171

Some tunnel info from Wikipedia:

The table below lists many of the tunnels under the River Thames in and near London, which, thanks largely to its underlying bed of clay, is one of the most tunnelled cities in the world. The tunnels are used for road vehicles, pedestrians, Tube and railway lines and utilities. Several tunnels are over a century old: the original Thames Tunnel was the world's first underwater tunnel.

https://en.wikipedia.org/wiki/Tunnels_underneath_the_River_Thames

Subterranean London is the set of subterranean structures that lie beneath London. The city has been occupied by humans for two millennia. Over time, it acquired a vast number of these structures and spaces.

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The River Thames is the centre of London. Many tributaries flow into it. Over time these changed from water sources to untreated sewers and disease sources.[1]

As the city developed from a cluster of villages, many of the tributaries were buried or converted into canals.

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Several railway stations have cavernous vaults and tunnels running beneath them, often disused, or reopened with a new purpose. Examples include The Old Vic Tunnels, beneath London Waterloo station, and the vaults beneath London Bridge station, formerly utilised by the theatre company Shunt.

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Many underground military citadels were built under London. Few are acknowledged, and even fewer are open to the public. One exception is the famous Cabinet War Rooms, used by Winston Churchill during the Second World War.

During the war, parts of the Underground were converted into air-raid shelters known as deep-level shelters. Some were converted for military and civil defence use, such as the now-disused Kingsway telephone exchange.

Other civil defence centres in London are wholly or partly underground, mostly remnants from the Cold War. Many other subterranean facilities exist around the centre of government in Whitehall, often linked by tunnels.[6]

In December 1980, the New Statesman revealed the existence of secret tunnels linking government buildings, which he claimed would be used in the event of a national emergency. It is believed these tunnels also link to Buckingham Palace.[7] Author Duncan Campbell discussed these facilities in more detail, in the book War Plan UK: The Truth about Civil Defence in Britain (1982).[8] Peter Laurie wrote a book about these facilities, titled Beneath the City Streets: A Private Inquiry into the Nuclear Preoccupations of Government (1970).[9]

Utilities

London, like most other major cities, established an extensive underground infrastructure for electricity distribution, natural gas supply, water supply and telecommunications.

Starting in 1861, Victorian engineers built miles of purpose-built subways large enough to walk through, and through which they could run gas, electricity, water and hydraulic power pipes. These works removed the inconvenience of having to repeatedly excavate highways to allow access to underground utilities.[10]

Some underground structures are no longer in use. These include:

The London Hydraulic Power Company, set up in 1883, installed a hydraulic power network of high-pressure cast-iron water mains. These were bought by Mercury Communications for use as telecommunications ducts.

Sections of the London Pneumatic Despatch Company tunnels linking the General Post Office and Euston Railway station

An extensive private underground railway, the London Post Office Railway, was constructed by the Post Office became a tourist attraction.

Closed London Underground stations are generally not accessible to the public.

https://en.wikipedia.org/wiki/Subterranean_London

A number of military citadels are known to have been constructed underground in central London, dating mostly from the Second World War and the Cold War. Unlike traditional above-ground citadels, these sites are primarily secure centres for defence co-ordination.

A large network of tunnels exists below London for a variety of communications, civil defence and military purposes,[1][2] however it is unclear how these tunnels, and the various facilities linked to them, fit together, if at all. Even the number and nature of these facilities is unclear; only a few have been officially admitted to.

Part 1

>>11859747

Pindar

The most important military citadel in central London is Pindar, or the Defence Crisis Management Centre. The bunker is deep beneath the Ministry of Defence on Whitehall.[3] Construction took ten years and cost £126.3 million. Pindar became operational in 1992, two years before construction was complete. Computer equipment was much more expensive to install than originally estimated as there was very little physical access to the site.

Pindar's main function is to be a crisis management and communications centre, principally between the MOD headquarters and the actual centre of military operations, the Permanent Joint Headquarters in Northwood. It is reported to be connected to Downing Street and the Cabinet Office by a tunnel under Whitehall.[4] Despite rumours, Armed Forces Minister Jeremy Hanley told the House of Commons on 29 April 1994 that "the facility is not connected to any transport system."[5]

Although the facility is not open to the public, it has had some public exposure. In the 2003 BBC documentary on the Iraq conflict, Fighting the War, BBC cameras were allowed into the facility to film a small part of a teleconference between ministers and military commanders. Also, in 2008 the British photographer David Moore published his series of photographs, The Last Things, widely believed to be an extensive photographic survey of Pindar.[6] Photographs taken of the facility in 2008 show that it has stores including toothpaste, toothbrushes, and mouthwashes. It has bunks for up to 100 military officers, politicians and civilians as well as communication facilities, a medical centre and maps.[7]

The name Pindar is taken from the ancient Greek poet, whose house alone was left standing after Thebes was razed in 335 BCE.[7]

Admiralty Citadel

The Admiralty Citadel in 2008

The Admiralty Citadel, London's most visible military citadel, is located just behind the Admiralty building on Horse Guards Parade. It was constructed in 1940–1941 as a bomb-proof operations centre for the Admiralty, with foundations 30 ft (9.1 m) deep and a 20-foot (6.1 m) thick concrete roof. It is also linked by tunnels to government buildings in Whitehall.[8]

Cabinet War Rooms

The only central London citadel currently open to the public is the Cabinet War Rooms, located in Horse Guards Road in the basement of what is now HM Treasury. This was not a purpose-built citadel but was instead a reinforced adaptation of an existing basement built many years before.

Q-Whitehall

Q-Whitehall is the name given to a communications facility under Whitehall.

The facility was built in a 12 ft (3.7 m) diameter tunnel during World War II, and extends under Whitehall. A similar facility was constructed in a tunnel that ran parallel to the Aldwych branch of the Piccadilly Line and was known as Trunks Kingsway. The project was known as 'Post Office scheme 2845'.[9] A detailed description, with photographs, was published just after the war in the January 1946 edition of The Post Office Electrical Engineers' Journal.

Sites equipped with unusual amounts of GPO/BT telecommunications plant are given a BT site engineering code. This site's code was L/QWHI.

The site provided protected accommodation for the lines and terminal equipment serving the most important government departments, civil and military, to ensure the command and control of the war could continue despite heavy bombing of London.

At the northern end, a tunnel connects to a shaft up to the former Trafalgar Square tube station (now merged with Charing Cross station), and to the BT deep level cable tunnels which were built under much of London during the Cold War. At the southern end, an 8 ft (2.4 m) diameter extension (Scheme 2845A) connects to a shaft under Court 6 of the Treasury Building: this provided the protected route from the Cabinet War Room. This was known as Y-Whitehall. The 8 ft (2.4 m) tunnel was further extended (Scheme 2845B) to the Marsham Street Rotundas. This extension housed the 'Federal' telephone exchange which had a dialling code of 333 from the public network. In the 1980s it housed Horseferry Tandem which provided a unified communications system for all government departments as well as the Palace of Westminster.

Access to the tunnel is gained via an 8 ft (2.4 m) lateral tunnel and a lift shaft in the nearby Whitehall telephone exchange in Craig's Court. A further entrance is via the deep level portion of the Admiralty.

Spur tunnels, 5 ft (1.5 m) in diameter, were built to provide protected cable routes to the major service buildings either side of Whitehall.

Part 2

>>11859793

The Whitehall tunnels appear to have been extended in the early 1950s. Some official documents refer to a Scheme 3245: this is the only numbered tunnel scheme that has never been officially revealed or located by researchers. Files in the National Archives which may relate to this have been closed for 75 years and will not be opened until the 2020s.

The journalist Duncan Campbell managed to get into the BT deep level cable tunnels below London, and described his adventure in a New Statesman article in 1980. He found a (closed) entrance to Q-Whitehall below Trafalgar Square. He has since put some pictures of this trip on a web site.[10]

https://en.wikipedia.org/wiki/Military_citadels_under_London#Pindar

Central Government War Headquarters

The Central Government War Headquarters (CGWHQ) is a 35-acre (14 ha)[1] complex built 120 feet (37 m) underground[2] as the United Kingdom's emergency government war headquarters – the hub of the country's alternative seat of power outside London during a nuclear war or conflict with the Soviet Union. It is located in Corsham, Wiltshire, in a former Bath stone quarry known as Spring Quarry, under the present-day MoD Corsham.[3] In 1940, during the Second World War, the site was acquired by the Minister of Aircraft Production and used as an underground engine factory.[1]

The complex was known variously as "Stockwell", "Subterfuge", "Burlington", "Turnstile", "Chanticleer", "Peripheral", and "Site 3". It was also nicknamed "Hawthorn" by journalist Duncan Campbell, who first revealed its existence in his 1982 book War Plan UK.[4] It was also mentioned by Peter Laurie in his 1979 revised edition of Beneath the City Streets.[5]

It was commissioned in 1955, after approval by prime minister Anthony Eden.[1] However it became outdated shortly after it was built, due to intercontinental ballistic missiles being able to target it, and the formulation of other plans (such as PYTHON). Nevertheless the complex continued to have a role in war plans and remained in operation for thirty years.[6]

https://en.wikipedia.org/wiki/Central_Government_War_Headquarters

Part 3

Re Gina

Giuliani & Barr