The Ajax, formerly known as the Scout SV (Specialist Vehicle), is a group of
armoured fighting vehicle
An armoured fighting vehicle (British English) or armored fighting vehicle (American English) (AFV) is an armed combat vehicle protected by vehicle armour, armour, generally combining operational mobility with Offensive (military), offensive a ...
s developed by
General Dynamics UK for the
British Army
The British Army is the principal Army, land warfare force of the United Kingdom. the British Army comprises 73,847 regular full-time personnel, 4,127 Brigade of Gurkhas, Gurkhas, 25,742 Army Reserve (United Kingdom), volunteer reserve perso ...
. It has suffered serious development and production difficulties.
The Ajax is a development of the
ASCOD armoured fighting vehicles used by the
Spanish Armed Forces
The Spanish Armed Forces are in charge of guaranteeing the sovereignty and independence of the Spain, Kingdom of Spain, defending its territorial integrity and the constitutional order, according to the functions entrusted to them by the Spanish ...
and
Austrian Armed Forces
The Austrian Armed Forces () are the combined military forces of Austria.
The military consists of 16,000 active-duty personnel and 125,600 reservists. The military budget is 1.0% of national GDP (including pensions) or €3.317 billion (20 ...
. The vehicles were originally developed by
Steyr-Daimler-Puch Spezialfahrzeug and
Santa Bárbara Sistemas
Santa Bárbara Sistemas is a Spanish defense contractor based in Madrid, integrated under General Dynamics European Land Systems (GDELS), a business unit of General Dynamics which consolidated in one structure all European subsidiaries of GDLS.
...
in the early 1990s. Both companies were purchased by General Dynamics in the early 2000s.
In 2010, General Dynamics UK was selected as the winner of the
Future Rapid Effect System contract with the ASCOD Common Base Platform, beating
BAE Systems
BAE Systems plc is a British Multinational corporation, multinational Aerospace industry, aerospace, military technology, military and information security company, based in London. It is the largest manufacturer in Britain as of 2017. It is ...
'
CV90
The Combat Vehicle 90 (CV90) (, strf 90 or Stridsfordon 90) is a family of Swedish tracked armoured combat vehicles designed by the Swedish Defence Materiel Administration (FMV), Hägglund & Söner and Bofors during the mid-1980s to early 1 ...
proposal. The Ajax vehicles were to be procured in a number of variants, initially planned to be in blocks, with the first vehicles planned to be delivered in 2017. Delays meant that as of January 2020, initial operating capability was expected in July 2020.
In November 2020, trials were halted over excessive noise and vibration. In September 2021 Jeremy Quin, Minister for Defence Procurement, in a written response stated that dynamic testing and training on Ajax was suspended and that "it is not possible to determine a realistic timescale for the introduction of Ajax vehicles into operational service". Limited trials resumed in October 2022, with extended trials to last possibly until early 2025.
In a statement in March 2023, the
Ministry of Defence
A ministry of defence or defense (see American and British English spelling differences#-ce.2C -se, spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and Mi ...
(MOD) said that full operating capability was expected between October 2028 and September 2029, when the army has trained and converted forces to the vehicle.
Deliveries of production Ajax vehicles to frontline British Army units began in January 2025, some eight years behind the original schedule.
Development

The Ajax has its origins in the
Future Rapid Effect System programme going back to the 1990s when the joint
UK/USA TRACER programme was cancelled. The purpose of the ''FRES'' programme was to find a replacement for the
British Army
The British Army is the principal Army, land warfare force of the United Kingdom. the British Army comprises 73,847 regular full-time personnel, 4,127 Brigade of Gurkhas, Gurkhas, 25,742 Army Reserve (United Kingdom), volunteer reserve perso ...
's
Combat Vehicle Reconnaissance (Tracked) (CVR(T)) family of vehicles, which have been in service from 1971. As other armies had already done the British Army was replacing its
Armoured Fighting Vehicles
An armoured fighting vehicle (British English) or armored fighting vehicle (American English) (AFV) is an armed combat vehicle protected by vehicle armour, armour, generally combining operational mobility with Offensive (military), offensive a ...
(AFVs) with
Infantry Fighting Vehicles
An infantry fighting vehicle (IFV), also known as a mechanized infantry combat vehicle (MICV), is a type of armoured fighting vehicle and armoured personnel carrier used to carry infantry into battle and provide direct fire, direct-fire suppo ...
(IFVs). General Dynamics UK won the contract in March 2010 after years of competition from
BAE Systems
BAE Systems plc is a British Multinational corporation, multinational Aerospace industry, aerospace, military technology, military and information security company, based in London. It is the largest manufacturer in Britain as of 2017. It is ...
. After the
Ministry of Defence
A ministry of defence or defense (see American and British English spelling differences#-ce.2C -se, spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and Mi ...
had selected the ASCOD 2 Common Base Platform, BAE tried to reverse the decision by offering to manufacture the CV90 at their
Newcastle
Newcastle usually refers to:
*Newcastle upon Tyne, a city and metropolitan borough in Tyne and Wear, England, United Kingdom
*Newcastle-under-Lyme, a town in Staffordshire, England, United Kingdom
*Newcastle, New South Wales, a metropolitan area ...
facility. Nevertheless, the Ministry of Defence awarded General Dynamics a £500 million Demonstration Phase contract. General Dynamics has conducted design review work using the input of soldiers and bringing the ASCOD 2 Chassis in line with the British requirements.
The Ajax programme passed the "Preliminary Design Review" (PDR) initial design point in December 2012. At this stage of development, system maturity and preliminary system design were reviewed. In late 2013, the "Common Base Platform Critical Design Review" (CDR) was completed and development continued. In June 2014, the Protected Mobility Reconnaissance Support (PMRS) variant of the Scout Family officially completed its CDR. A "Mobile Test Rig", the precursor to a prototype, which had been undergoing rigorous testing including cold weather and Operational and Tactical (O&T) mobility trials, as well as Accelerated Life Testing (ALT), completed system de-risking. At the DVD exhibition in 2014, the first pre-production prototype of the PMRS variant was unveiled, built at General Dynamics' facilities in
Spain
Spain, or the Kingdom of Spain, is a country in Southern Europe, Southern and Western Europe with territories in North Africa. Featuring the Punta de Tarifa, southernmost point of continental Europe, it is the largest country in Southern Eur ...
.
Initially, the Ajax was to be procured in a number of blocks totalling 1,010 vehicles. The first order of Block 1 vehicles encompassed Scout Reconnaissance, PMRS APC, and Repair and Recovery variants, with a following order of Block 2 to consist of Reconnaissance, C2, and Ambulance variants. There was a possibility for a third Block of vehicles encompassing a "Direct Fire" vehicle with a 120mm main gun, "Manoeuvre Support", and a "Joint Fires" variant equipped to succeed the
FV102 Striker in the anti-tank role. However, in September 2014, Block 3 vehicles were dropped and the Ministry of Defence had "no plans" to order any Block 2 vehicles.
On 3 September 2014, the British Government ordered 589 Scout SV vehicles, totalling a cost of £3.5 billion excluding VAT. A number of Block 2 variants were merged into the Block 1 order.

The variants ordered include:
*245 turreted 'Ajax' variants
**198 Reconnaissance and Strike (Ajax)
**23 Joint Fire Control (Ajax)
**24 Ground Based Surveillance (Ajax)
*256 Protected Mobility Recce Support (PMRS) variants
**93
Armoured Personnel Carrier
An armoured personnel carrier (APC) is a broad type of armoured military vehicle designed to transport personnel and equipment in combat zones. Since World War I, APCs have become a very common piece of military equipment around the world.
Acc ...
(APC) (Ares)
**112 Command and Control (Athena)
**34 Formation Reconnaissance Overwatch (Ares)
**51 Engineer Reconnaissance (Argus)
*88 Engineering variants for
REME
The Corps of Royal Electrical and Mechanical Engineers (REME ) is the maintenance arm of the British Army
The British Army is the principal Army, land warfare force of the United Kingdom. the British Army comprises 73,847 regular full ...
based on the PMRS
**38
armoured recovery vehicle
An armoured recovery vehicle (ARV) is typically a powerful tank or armoured personnel carrier (APC) chassis modified for use during combat for military vehicle recovery (towing) or repair of battle-damaged, stuck, and/or inoperable armoured f ...
s (Atlas) with three man crew
**50 Repair vehicles (Apollo) with four man crew
Deliveries to the British Army began in 2017; the last deliveries were scheduled for around 2026.
In July 2015, the Ministry of Defence concluded their study into having final assembly of the Scout SV vehicles take place in the UK rather than General Dynamics' primary production facility in Spain. There was a business case for UK final assembly and testing. As part of a £390 million maintenance package running until 2024, General Dynamics moved production of the last 489 vehicles to the UK. General Dynamics bought a former forklift factory in
Pentrebach in South Wales to assemble the Scout SV.
Thales UK won the sight system contract for the Scout family, safeguarding engineering and manufacturing jobs at their site in Scotland.
In early August 2015,
Rheinmetall
Rheinmetall AG () is a German automotive and arms manufacturer, headquartered in Düsseldorf, Germany. The group was promoted to the DAX, Germany's leading stock market index, in March 2023. It is the largest German and fifth largest Europe ...
of Germany was contracted to manufacture the Scout SV turrets.
Meggitt
Parker Meggitt (legally Meggitt Ltd) is a British international company specialising in components and sub-systems for the aerospace, defence and selected energy markets. It was listed on the London Stock Exchange and was a constituent of the F ...
was to manufacture the Scout SV ammunition handling system.
On 15 September 2015, Scout was renamed
Ajax
Ajax may refer to:
Greek mythology and tragedy
* Ajax the Great, a Greek mythological hero, son of King Telamon and Periboea
* Ajax the Lesser, a Greek mythological hero, son of Oileus, the king of Locris
* Ajax (play), ''Ajax'' (play), by the an ...
.
The name Ajax applies to the family as a whole, but also to the turreted variant specifically. The reconnaissance support variant was named Ares after
the Greek god of war; the command-and-control variant was named after
Athena
Athena or Athene, often given the epithet Pallas, is an ancient Greek religion, ancient Greek goddess associated with wisdom, warfare, and handicraft who was later syncretism, syncretized with the Roman goddess Minerva. Athena was regarde ...
; the equipment repair vehicle was named
Apollo
Apollo is one of the Twelve Olympians, Olympian deities in Ancient Greek religion, ancient Greek and Ancient Roman religion, Roman religion and Greek mythology, Greek and Roman mythology. Apollo has been recognized as a god of archery, mu ...
; the equipment recovery variant was named
Atlas
An atlas is a collection of maps; it is typically a bundle of world map, maps of Earth or of a continent or region of Earth. Advances in astronomy have also resulted in atlases of the celestial sphere or of other planets.
Atlases have traditio ...
; and the engineering reconnaissance variant was named
Argus.
In April 2016, the main cannon and chain gun were fired successfully. In December 2016 manned firing tests of the three machine guns which can be fitted to the Ares vehicle were successfully carried out.
Design
The Ajax is manufactured and designed by General Dynamics UK and General Dynamics Santa Bárbara Sistemas (Spain), with the new turret and fire control system fitted on the Reconnaissance variant being designed and manufactured by Lockheed Martin UK. Lockheed Martin is working closely with the
Defence Support Group
The Defence Support Group (DSG) was an executive agency and wholly owned trading fund of the Ministry of Defence in the United Kingdom. It was established on 1 April 2008 by the merger of the Defence Aviation Repair Agency and the Army Base Re ...
for turret manufacture and assembly as well as Rheinmetall. 75% of turret and
CTAS40 cannon work will be carried out in the UK.
The turret ring is in diameter, allowing for much more work-space than comparable AFVs. The Scout SV is also equipped with a state of the art
(ISTAR) package with advanced sensors and space for further future growth. This advanced ISTAR package allows for automated search, tracking and detection, more than doubling stand-off range at which targets can be identified and tracked.
The Ajax has a 20 Gbit/s Ethernet intelligent
open architecture
Open architecture is a type of computer architecture or software architecture intended to make adding, upgrading, and swapping components with other computers easy. For example, the IBM PC, Amiga 2000 and Apple IIe have an open architecture supp ...
, which enables it to capture, process and store six TBs of information gathered by the sensors. It can then share this data, be it images or other information, via a real-time integrated
Bowman communication system as fitted to the
Challenger 2
The FV4034 Challenger 2 (MoD designation "CR2") is a third generation British main battle tank (MBT) in service with the armies of the United Kingdom, Oman, and Ukraine.
It was designed by Vickers Defence Systems (now Rheinmetall BAE Systems ...
. Power for these systems comes from a silent auxiliary power generator.
Eighty per cent of the vehicle manufacture will be completed in the UK, with 70% of the supply chain companies UK-based. The Ajax family project supports 400 jobs at General Dynamics UK's two facilities at
Merthyr Tydfil
Merthyr Tydfil () is the main town in Merthyr Tydfil County Borough, Wales, administered by Merthyr Tydfil County Borough Council. It is about north of Cardiff. Often called just Merthyr, it is said to be named after Tydfil, daughter of K ...
and
Oakdale in
South Wales
South Wales ( ) is a Regions of Wales, loosely defined region of Wales bordered by England to the east and mid Wales to the north. Generally considered to include the Historic counties of Wales, historic counties of Glamorgan and Monmouthshire ( ...
, and an estimated further 4,000 jobs in the British supply chain.
Project progress
Ordered in 2014, the first delivery was scheduled for 2017, while it was stated that the first British Army squadron "will be equipped by mid-2019" so that they could be deployed by the end of 2020.
[ This was delayed due to design and testing problems. Test crews were required to wear noise cancelling headphones and be checked for hearing loss at the end of operations and the vehicles were unable to reverse over obstacles more than 20 centimeters high. As of March 2021, the British Army had taken deliveries of the Ares variant, whilst 12 Ajax variants were going through acceptance testing. In June 2021 it was revealed that trials of Ajax variants were halted from November 2020 to March 2021 due to excessive vibration and noise, leaving crews suffering from nausea, swollen joints and ]tinnitus
Tinnitus is a condition when a person hears a ringing sound or a different variety of sound when no corresponding external sound is present and other people cannot hear it. Nearly everyone experiences faint "normal tinnitus" in a completely ...
. Test crews were then limited to 105 minutes inside and . The excessive vibration while moving was also damaging electronic systems and preventing armament from stabilising. Suspension faults on the Ajax variant meant that its turret could not fire while moving.[ The hulls were of inconsistent lengths and had non-parallel sides, which meant that the vibration problems did not manifest in a uniform manner, making it exceedingly difficult to determine if the vibration arose from a fundamental design problem or from build quality failures.] A leaked report doubted whether the Ajax Armoured Vehicle programme would be delivered on time and within budget and suggested that there was a risk that the vehicles' credibility would be questioned by troops and morale impaired. General Dynamics UK refused to comment on the report.
In early 2021 MPs on the Defence Select Committee
The Defence Select Committee is one of the Select Committees of the House of Commons of the United Kingdom, having been established in 1979. It examines the expenditure, administration, and policy of the Ministry of Defence and its associated pu ...
issued a report critical of the state of the Army's armoured vehicle programme—including Ajax—which had spent hundreds of millions of pounds with little to show for it. Some defence experts questioned whether Ajax would ever enter service, calling it "the Army's Nimrod MRA4" (an upgrade of which never entered service and was scrapped in 2010 at a cost of £3.8bn).[ '']The Times
''The Times'' is a British Newspaper#Daily, daily Newspaper#National, national newspaper based in London. It began in 1785 under the title ''The Daily Universal Register'', adopting its modern name on 1 January 1788. ''The Times'' and its si ...
'' reported that in June 2021 the problems with noise and rough handling were so serious that trials involving the Ajax had been suspended. The paper quoted Francis Tusa, editor of ''Defence Analysis'', concluding that the British Army "are spending good money after bad for something that is arguably unfixable." On 20 July 2021, Minister for Defence Procurement Jeremy Quin
Sir Jeremy Mark Quin (born 24 September 1968) is a British Conservative politician who served as the Member of Parliament (MP) for Horsham from 2015–2024. He served as Minister of State for Defence Procurement from February 2020 to September ...
told the Defence Select Committee
The Defence Select Committee is one of the Select Committees of the House of Commons of the United Kingdom, having been established in 1979. It examines the expenditure, administration, and policy of the Ministry of Defence and its associated pu ...
that "we cannot be 100 per cent certain that he salvation of the programmecan be achieved."[ On 15 December 2021, Quin updated the Parliament and stated that "We are commissioning a senior legal figure to look more deeply at Ajax, and not just health and safety; to examine the cultural and process flaws that it has highlighted. We will leave no stone unturned to learn these lessons." Quin also listed four key points for the review to consider, relating to safety concerns by MoD officials that were communicated to the manufacturer. In June 2022 a report by the UK Parliament's ]Public Accounts Committee
A public accounts committee (PAC) is a committee within a legislature whose role is to study public audits, invite ministers, permanent secretaries or other ministry officials to the committee for questioning, and report on their findings subseque ...
found that delays had been caused by a "litany of failures" and advised that the Ministry of Defence needed to either resolve the problems or scrap the project, to prevent the compromising of national security.
Limited User Validation Trials recommenced in October 2022, with a view to commencing Reliability Growth Trials in January 2023. On 21 December 2022, the Minister of State
Minister of state is a designation for a government minister, with varying meanings in different jurisdictions. In a number of European countries, the title is given as an honorific conferring a higher rank, often bestowed upon senior minister ...
for the Ministry of Defence, Alex Chalk, stated that these trials could last from 18 to 24 months—a period which would mean that the results of the trials would not be available until after the next UK general election.
On 24 February 2023 Defence Secretary Ben Wallace described the programme as having "turned a corner" and being "back on track."
In March 2023 the MOD said that it had resumed payments to General Dynamics Land Systems UK (GDLS-UK), having halted them more than two years previously. The project has cost around £5.5bn so far, although according to the MOD "the whole programme remains within its originally approved budget level."
In January 2025, deliveries of Ajax vehicles commenced to three British Army units; the Combat Manoeuvre Centre at Bovington Camp, the Queen's Royal Hussars
The Queen's Royal Hussars (The Queen's Own and Royal Irish) (QRH) is the most senior armoured regiment in the British Army, equipped with Challenger 2 main battle tanks. The regiment was formed on 1 September 1993 from the amalgamation of the Quee ...
at Tidworth Camp
Tidworth Camp is a military installation at Tidworth in Wiltshire, England. It forms part of the Tidworth, Netheravon and Bulford (TidNBul) Garrison.
History
The Camp was established when the War Office acquired a 19th-century mansion – Te ...
, and the Royal Lancers
The Royal Lancers (Queen Elizabeths' Own) is a armoured cavalry regiment of the British Army. The regiment was formed by an amalgamation of the 9th/12th Royal Lancers, 9th/12th Royal Lancers (Prince of Wales's) and the Queen's Royal Lancers on ...
at Catterick Garrison
Catterick Garrison is a major garrison and List of modern military towns, military town south of Richmond, North Yorkshire, Richmond, North Yorkshire, England. It is the largest British Army garrison in the world, with a population of around 14 ...
.
Variants
* ATLAS armoured recovery vehicle
* APOLLO armoured repair vehicle
* ARES armoured personnel carrier
* AJAX reconnaissance vehicle
* ATHENA command post vehicle
* ARGUS engineering vehicle
Operators
Current operators
; (589)
: Order:
:* 245 Ajax
:* 93 Ares
:* 112 Athena
:* 50 Apollo
:* 38 Atlas
:* 51 Argus
: 100 of the Ajax family have entered service by 10 April 2025.
Potential operators
; (700)
: GDLS UK is offering the Ajax, the ARES chassis base, to fulfil the need for a heavy IFV for the Polish Army. It would be equipped with the ZSSW-30
The ZSSW-30 (Polish language, Polish: Zdalnie Sterowany System Wieżowy 30 mm - 30mm Remote Control Turret System) is a Polish Remote controlled weapon station, remotely controlled turret designed by Huta Stalowa Wola and WB Group, WB Electronics ...
remote controlled turret.
: The Polish Army is looking for a heavy IFV (CBWP) for its Abrams tank brigades. The other vehicles in competition include the GDELS ASCOD 2, the Rheinmetall KF-41 Lynx, the BAE Systems AMPV, the Otokar Tulpar and a South Korean AS21 Redback.
: Up to 700 vehicles are planned under the CBWP programme.[ https://defence24.com/industry/new-player-in-polands-armored-programme-defence24-exclusive ]
See also
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
* Household Cavalry Regiment
* Formation reconnaissance regiment
* 3rd (UK) Division
References
External links
AJAX at generaldynamics.uk.com
AJAX at ThinkDefence.co.uk
"The British Army’s Greek Tragedy"
Dr. Jack Watling, RUSI 22 July 2021
{{Authority control
Tracked armoured fighting vehicles
Tracked infantry fighting vehicles
Armoured fighting vehicles of the United Kingdom
Armoured fighting vehicles of the post–Cold War period
Military vehicles introduced in the 2010s
General Dynamics land vehicles
United Kingdom defence procurement
Infantry fighting vehicles of the post–Cold War period