Al Carns Biography: Age, Wife, Royal Marines Career, Birmingham Selly Oak MP And Defence Minister Resignation

Alistair Scott Carns was born on 27 March 1980 in Aberdeen, Scotland. He is a British Labour politician, decorated Royal Marines colonel, and former Armed Forces Minister, known for a military career spanning every major British conflict of the 21st century and a ministerial resignation in June 2026 that put him at the centre of Labour’s leadership crisis.

Currently serving as the Member of Parliament for Birmingham Selly Oak, Carns is being discussed as a potential future Labour leader. This biography covers his early life, military career, political rise, personal life, and his role in the defining political events of 2026.

Early Life and Education

Al Carns grew up in Heatheryfold, Aberdeen, raised by his single mother alongside four siblings, three of whom he shared a bedroom with. The family home sat next to a council estate and money was tight throughout his childhood. Carns has spoken candidly about his upbringing, saying it gave him a direct understanding of what pressure does to families when money is short and the future feels uncertain. That background, combined with an early fascination with military history and deep sea diving, set the course for everything that followed.

He was educated at Hazlehead Academy, a state comprehensive secondary school in Aberdeen. His History teacher recalled him as sporty and academically engaged, though also notably accident-prone. The accidents were not trivial: during his childhood and teenage years Carns broke his neck, broke his leg, and suffered third-degree burns to eleven percent of his body. These experiences did not deter him; if anything, they appear to have built the mental resilience that would later define his career in special forces.

His initial attempt to join the military was blocked because of colour blindness, a condition that disqualified him from enlisting under standard rules. Rather than accepting this outcome, Carns returned to college and completed a Higher National Diploma in Physical Fitness and Sports Science at Aberdeen College, improving his qualifications and his fitness profile to the point where he was able to re-apply and be accepted. He enlisted as a Royal Marine Commando in 1999 at the age of 19, beginning one of the most decorated military careers in modern British service history.

Royal Marines Career and Military Service

Al Carns was commissioned as an officer in the Royal Marines in September 2002 and appointed to the trained strength as a captain in September 2003. His promotions followed a steady trajectory: major in October 2010, lieutenant colonel in June 2016, and colonel in July 2021. By that point he had served in every major British military conflict of the preceding two decades, a record that The Independent described as covering “every major conflict this country has been engaged in for the last two dozen years,” though much of the specific operational detail remains classified due to his involvement with special forces.

Central to Carns’ military identity is his service with the Special Boat Service, the Royal Navy’s elite special forces unit and a counterpart to the SAS. The SBS is among the most selective military units in the world, with a selection process lasting approximately six months and an attrition rate of around ninety percent. His decorated tours of duty included five separate deployments to Afghanistan, and he was awarded three of the highest honours available to a British military officer: the Distinguished Service Order, the Order of the British Empire, and the Military Cross. His DSO was notably the first to bear the King’s cypher, awarded in July 2025.

Carns also served as military adviser to three successive Secretaries of State for Defence: Michael Fallon from 2014 to 2017, Gavin Williamson from 2017 to 2019, and Penny Mordaunt from 2019 to 2021. This advisory role placed him at the heart of Britain’s defence policy machinery across two governments, giving him a depth of strategic insight that few politicians of any party could match. He later served as Chief of Staff to the Commander UK Strike Force, coordinating the Royal Navy’s carrier strike capabilities and Royal Marines commando operations.

In May 2025, Carns achieved a remarkable personal milestone entirely separate from his political career: he summited Mount Everest in under five days without on-mountain acclimatisation, as part of a trial using xenon gas as a preparation method for four former special forces members. It was a record-setting achievement that underlined his status as an exceptional physical specimen and reflected the kind of boundary-pushing mentality that characterised his entire career.

Carns resigned his regular commission in May 2024 ahead of a planned promotion to brigadier, which would have made him the youngest officer to reach that rank. He chose instead to enter politics. After his election to Parliament, he re-enlisted in the Royal Marines as a reservist, maintaining his connection to the service he had spent twenty-five years building.

Political Career and Rise to Minister

Al Carns stood as the Labour candidate for Birmingham Selly Oak at the 2024 general election and won the seat with a majority of 11,537 votes. Within five days of his election, Prime Minister Keir Starmer appointed him Parliamentary Under-Secretary of State for Veterans and People at the Ministry of Defence. It was an appointment that reflected both Carns’ unique military credentials and Starmer’s desire to signal seriousness on defence. He held the veterans brief until September 2025, when he was elevated to Parliamentary Under-Secretary of State for the Armed Forces, a role commonly known as Minister for the Armed Forces.

In this second ministerial role, Carns drove a series of defence and military modernisation initiatives. He announced the Royal Air Force’s first drone aces following operations in the Middle East, launched a drone degree apprenticeship programme, and coordinated a medical supply parachute drop to the remote territory of Tristan da Cunha. He repeatedly warned in public speeches, including at the April 2026 London Defence Conference, about the speed at which the character of modern conflict was changing and Britain’s failure to keep pace through procurement and investment.

During the 2026 Labour leadership crisis, Carns emerged as a dark horse candidate for the leadership and therefore the potential next Prime Minister of the United Kingdom. His profile as a decorated special forces officer, combined with his working-class Scottish background and credibility on defence, made him an attractive proposition to some Labour MPs looking for an alternative to Andy Burnham.

The Defence Minister Resignation of June 2026

On 11 June 2026, Al Carns resigned as Minister for the Armed Forces, following the earlier resignation of Defence Secretary John Healey on the same day. His resignation letter was striking for its directness. Carns wrote that “the character of conflict is changing faster than our procurement can keep up with,” and criticised the defence investment plan agreed by Chancellor Rachel Reeves as “not built for the threat we face” and as “neither transformative enough nor sufficiently funded.”

He added that he could not “in good conscience stand at the dispatch box and defend a level of investment I know to be insufficient.” For a minister to resign over the inadequacy of government spending in their own portfolio, rather than over a scandal or a policy disagreement, was relatively unusual in British politics. It positioned Carns as a figure of principle rather than opportunism, though it also created immediate speculation that his departure was a strategic move in the developing leadership contest.

The resignation came amid the broader collapse of Keir Starmer’s premiership, which accelerated after Andy Burnham’s victory in the Makerfield by-election on 18 June 2026 and Starmer’s subsequent announcement on 22 June 2026 that he would step down as Prime Minister and Labour leader. As of late June 2026, Burnham is the sole declared candidate for the Labour leadership. Carns has not yet confirmed whether he intends to stand against Burnham or to negotiate on defence policy commitments before offering his support. Some commentators speculate he may hold out for firm guarantees on defence investment as the price of his endorsement.

He also briefly attracted public attention when it emerged that he had previously briefed US President Donald Trump during Trump’s first visit to England. The detail added a further layer of international credibility to an already unusual political biography.

Personal Life

Al Carns is a devoted father to three children: two boys and a daughter. He also owns a red fox Labrador named Maverick. His wife’s name has not been confirmed in public sources, and Carns has maintained a level of privacy around his family life that is consistent with his background in special forces, where discretion is a professional habit.

He is known for maintaining extremely high physical fitness, a characteristic that dates back to his Royal Marines career and was demonstrated most publicly by his Everest summit in May 2025. He has spoken in interviews about the importance of fitness as a mental as well as physical discipline and credits his upbringing in Aberdeen, with its cold weather and working-class culture, as foundational to his approach to adversity.

His social media presence is modest relative to many politicians. He maintains an Instagram account under @alcarns. He has been careful not to publicise operational details of his military service, consistent with his obligations as a former and current member of the special forces community. His public persona is one of quiet competence rather than political theatre, a style that many observers believe could serve him well if he decides to enter the Labour leadership contest.

For more profiles of UK politicians in the current Labour reshuffle period, visit our United Kingdom biography section. You may also be interested in our profile of Josh Simons, whose own resignation from Parliament helped trigger the leadership crisis that brought Carns to national attention.

Quick Facts About Al Carns