The Traffic and Environmental Zone, commonly known as the "ring of steel", [1] is the security and surveillance cordon consisting of road barriers, checkpoints and several hundred CCTV cameras surrounding the City of London, the financial district at the heart of Greater London. The measures have been used since the 1990s to deter terrorism and other threats. [2] [3]
The "ring of steel" measures were introduced by Owen Kelly, then the City of London Police commissioner, following the Provisional IRA bombing campaign in London in the 1980s and early 1990s including attacks within the City such as the 1992 Baltic Exchange and 1993 Bishopsgate attacks. [3] The "Traffic and Environmental Zone" was officially established in 1993. [4]
The term "ring of steel" was borrowed from an earlier stage of the Troubles when the centre of Belfast was fortified against attacks; this fortified perimeter was also known as the "ring of steel". [5]
Roads entering the City were narrowed and small chicanes were created to force drivers to slow down and be recorded by CCTV cameras. These roads typically had a concrete traffic island with a sentry box where police could stand guard and monitor traffic. [3] City planners call these types of precautions "fortress urbanism". [6] Some roads were closed to traffic entirely. [7] Despite the term "ring of steel", the roadblocks and chicanes were actually created with concrete blocks, [6] sometimes plastic coated, that were wedged together.
Initially the sentry posts were staffed by armed police almost continuously. The ring of steel consisted of plastic cones and on-duty police officers which the locals described as the "ring of plastic". [8] It served the purpose of providing a visible sign to the public that the City authorities were taking the threats of more attacks by the IRA seriously. [8] This was replaced by more permanent structures consisting of concrete barriers, checkpoints and hundreds of video cameras. [6] Following IRA ceasefires the police presence was curtailed.
In 1996, the IRA attacked another area of central London by exploding a bomb at the Docklands, resulting in two deaths, 39 other casualties and £85 million worth of damage. The attack showed that even if the TEZ were able to hinder attacks inside the City itself, terrorists could instead target other high-value areas such as the Docklands or Westminster.
Staffed checkpoints began to be phased out after the IRA announced a ceasefire in 1994 and were no longer used after the 1990s. [9]
Following the September 11 attacks in the United States in 2001, and a reported increased terrorist threat to the United Kingdom, security was stepped up with occasional spot checks on vehicles entering the cordon, although not to previous levels. [3] In December 2003, the ring of steel was widened to include more businesses in the City. [3] This was as a direct result of a police report that categorised a terrorist attack on the City as "inevitable". Traffic entering the City is also monitored and recorded at the boundary of the London congestion charging zone, which covers a wider area.
Re-introduction of staffed checkpoints, restricted roads, as well as rising street bollards and crash-proof barricades were proposed in December 2016 to combat "hostile vehicle-borne security threat[s]". [9] The proposals will be subject to a consultation and, if approved, be fully implemented by 2022. [10]
According to a 2011 Freedom of Information Act request, the total number of local government operated CCTV cameras in the City of London was 649. [11]
The number of surveillance cameras that are part of the TEZ is often wrongly quoted as 500,000. [12] This figure relates to Greater London, which has an area of 607 sq. mi. (1,572 square km) compared with the square mile (3 square km) of the City of London that the ring of steel covers. Furthermore, it has been acknowledged for several years that the methodology behind this figure is flawed, [13] but it has been widely quoted. [14]
The figure of 500,000 comes from a study by Michael McCahill and Clive Norris of UrbanEye published in 2002. [15] Based on a small sample in Putney High Street, McCahill and Norris extrapolate the number of surveillance cameras in Greater London to be 500,000 and in the United Kingdom to be 4.2 million. More reliable estimates put the total number of private and local government surveillance cameras in the whole of the United Kingdom at around 1.85 million in 2011. [16] [17]
Counterterrorism, also known as anti-terrorism, incorporates the practices, military tactics, techniques, and strategies that governments, law enforcement, businesses, and intelligence agencies use to combat or eliminate terrorism. Counterterrorism strategies are a government's motivation to use the instruments of national power to defeat terrorists, the organizations they maintain, and the networks they contain.
Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point-to-point (P2P), point-to-multipoint (P2MP), or mesh wired or wireless links. Even though almost all video cameras fit this definition, the term is most often applied to those used for surveillance in areas that require additional security or ongoing monitoring.
Surveillance is the monitoring of behavior, many activities, or information for the purpose of information gathering, influencing, managing or directing. This can include observation from a distance by means of electronic equipment, such as closed-circuit television (CCTV), or interception of electronically transmitted information like Internet traffic. It can also include simple technical methods, such as human intelligence gathering and postal interception.
Mass surveillance is the intricate surveillance of an entire or a substantial fraction of a population in order to monitor that group of citizens. The surveillance is often carried out by local and federal governments or governmental organizations, such as organizations like the NSA, but it may also be carried out by corporations. Depending on each nation's laws and judicial systems, the legality of and the permission required to engage in mass surveillance varies. It is the single most indicative distinguishing trait of totalitarian regimes. It is also often distinguished from targeted surveillance.
Automatic number-plate recognition is a technology that uses optical character recognition on images to read vehicle registration plates to create vehicle location data. It can use existing closed-circuit television, road-rule enforcement cameras, or cameras specifically designed for the task. ANPR is used by police forces around the world for law enforcement purposes, including to check if a vehicle is registered or licensed. It is also used for electronic toll collection on pay-per-use roads and as a method of cataloguing the movements of traffic, for example by highways agencies.
The Loughgall ambush took place on 8 May 1987 in the village of Loughgall, County Armagh, Northern Ireland. An eight-man unit of the Provisional Irish Republican Army (IRA) launched an attack on the Royal Ulster Constabulary (RUC) base in the village. An IRA member drove a digger with a bomb in its bucket through the perimeter fence, while the rest of the unit arrived in a van and fired on the building. The bomb exploded and destroyed almost half of the base. Soldiers from the British Army's Special Air Service (SAS) then returned fire both from within the base and from hidden positions around it in a pre-planned ambush, killing all of the attackers. Two of them were subsequently found to have been unarmed when they were killed.
The proxy bomb, also known as a human bomb, is a tactic that was used mainly by the Provisional Irish Republican Army (IRA) in Northern Ireland during the conflict known as "the Troubles". It involved forcing people to drive car bombs to British military targets after placing them or their families under some kind of threat The tactic was later adopted by the FARC in Colombia and by rebels in the Syrian Civil War.
The fortifications of London are extensive and mostly well maintained, though many of the City of London's fortifications and defences were dismantled in the 17th and 18th century. Many of those that remain are tourist attractions, most notably the Tower of London.
The Special Detective Unit (SDU) is the main domestic security agency of the Garda Síochána, the national police force of Ireland, under the aegis of the Crime & Security Branch (CSB). It is the primary counter-terrorism and counter-espionage investigative unit within the state. The Special Detective Unit superseded the Special Branch, which itself replaced the older Criminal Investigation Department (CID), which was founded in 1921. They work in conjunction with the Defence Forces Directorate of Military Intelligence (J2) – Ireland's national intelligence service – on internal matters. The unit's headquarters are in Harcourt Street, Dublin City.
Automatic number plate recognition (ANPR) is a technology for automatically reading vehicle number plates. The Home Office states ANPR is used by law enforcement agencies in the United Kingdom to help detect, deter and disrupt criminality including tackling organised crime groups and terrorists.
The Lower Manhattan Security Initiative (LMSI) is a New York City Police Department initiative overseen by the Counterterrorism Bureau to increase surveillance efforts in Lower Manhattan, New York City, New York, United States. It is housed in the Lower Manhattan Security Coordination Center (LMSCC) located at 55 Broadway. The LMSI covers a 1.7-mile area from Canal Street to Battery Park, including the New York Stock Exchange, World Financial Center, former World Trade Center site, and numerous financial institutions.
The attack on Cloghoge checkpoint was an unconventional railway bomb attack carried out on 1 May 1992 by the Provisional Irish Republican Army (IRA) against a British Army permanent vehicle checkpoint, manned at the time by members of the Royal Regiment of Fusiliers. The IRA's South Armagh Brigade fitted a van with train wheels that allowed it to move along a railway line. A large bomb was placed inside the van, which was then driven along the railway line to the target. The explosion killed one British soldier and injured 23 others. The complex, just north of the village of Cloghoge in County Armagh, on the southern outskirts of Newry, was utterly destroyed.
The Bishopsgate bombing occurred on 24 April 1993, when the Provisional Irish Republican Army (IRA) detonated a powerful truck bomb on Bishopsgate, a major thoroughfare in London's financial district, the City of London. Telephoned warnings were sent about an hour beforehand, but a news photographer was killed in the blast and 44 people were injured, with fatalities minimised due to it occurring on a Saturday. The blast destroyed the nearby St Ethelburga's church and wrecked Liverpool Street station and the NatWest Tower.
Ring of steel may refer to:
This is a chronology of activities by the Provisional Irish Republican Army (IRA), from 1992 to 1999.
The occupation of Cullaville took place on 22 April 1993, when 12 armed members of the South Armagh Brigade of the Provisional Irish Republican Army (IRA) set up a checkpoint on the main crossroads of Cullaville, County Armagh, Northern Ireland, isolating the small village for a two-hour period, despite the presence of a British Army watchtower some yards away. The IRA men withdrew before the security forces in the area could react.
The use of electronic surveillance by the United Kingdom grew from the development of signal intelligence and pioneering code breaking during World War II. In the post-war period, the Government Communications Headquarters (GCHQ) was formed and participated in programmes such as the Five Eyes collaboration of English-speaking nations. This focused on intercepting electronic communications, with substantial increases in surveillance capabilities over time. A series of media reports in 2013 revealed bulk collection and surveillance capabilities, including collection and sharing collaborations between GCHQ and the United States' National Security Agency. These were commonly described by the media and civil liberties groups as mass surveillance. Similar capabilities exist in other countries, including western European countries.
Mass surveillance in the People's Republic of China (PRC) is the network of monitoring systems used by the Chinese central government to monitor Chinese citizens. It is primarily conducted through the government, although corporate surveillance in connection with the Chinese government has been reported to occur. China monitors its citizens through Internet surveillance, camera surveillance, and through other digital technologies. It has become increasingly widespread and grown in sophistication under General Secretary of the Chinese Communist Party (CCP) Xi Jinping's administration.
The Baltic Exchange bombing was an attack by the Provisional IRA on the City of London, Britain's financial centre, on 10 April 1992, the day after the General Election which re-elected John Major from the Conservative Party as Prime Minister. The one-ton bomb – concealed in a large white truck and consisting of a fertilizer device wrapped with a detonation cord made from 100 lb (45 kg) of semtex – was the biggest bomb detonated on mainland Britain since World War II. The bombing killed three people, injured 91 others, and severely damaged the Baltic Exchange and its surroundings.
The Finchley Road bombings occurred on 2 October 1993, when the Provisional Irish Republican Army (IRA) detonated three time bombs on Finchley Road in north London, England. Telephoned warnings were sent six minutes beforehand, at approximately 00:26 UTC, but five people were injured from falling glass as a result of the blasts, and damage was caused to some shops and flats in the surrounding area. The three bombs were planted outside a Domino's Pizza restaurant, a travel agent, and offices of the St. Pancras Building Society. Later, anti-terrorist officers discovered and subsequently safely detonated a fourth bomb in a controlled environment, 1 mile (1.6 km) north of the initial bombings, in Golders Green. Two days later, on 4 October, the IRA detonated four more bombs in north London, two in Tottenham Lane and two more in Archway Road resulting in four injuries.
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