Could conscription really return to Britain? It’s a question that’s making millions uneasy, and according to senior military voices, it’s no longer unthinkable.
With the British Army now at its smallest size since the Battle of Waterloo, experts are openly warning that compulsory military service could one day be back on the table, particularly if global tensions continue to escalate.
A 2024 YouGov poll revealed deep public resistance to the idea. Thirty-eight per cent of Britons under 40 said they would refuse to fight if World War Three broke out, while 30 per cent said they would still refuse even if the UK faced an imminent invasion.
Despite Prime Minister Keir Starmer previously insisting conscription “isn’t on the agenda”, recent international developments, and the turbulent start to 2026, have reignited fears.
Rising global tension fuels anxiety
In just the first week of the year, US President Donald Trump ordered military strikes on Venezuela, reportedly overseeing the abduction of President Nicolás Maduro. The 79-year-old later threatened to pursue his ambitions to acquire Greenland “the hard way”, sending shockwaves through diplomatic circles.
Against this backdrop, concerns about Britain’s ability to defend itself have sharpened.
What conscription actually means
Conscription is introduced when a country needs to fight a war but lacks enough volunteers. If implemented, eligible citizens can be legally required to serve.
Sir Richard Knighton, Chief of the Defence Staff, has said he “cannot see conscription returning in the short term”, noting that Britain last enforced it during the lead-up to the Second World War. However, he also warned that “the situation in the world may deteriorate very significantly”.
Starmer has been firmer, stating last year that conscription “never crossed my lips”.
What happens if you refuse?
Historically, refusing conscription carried serious consequences. During World War II, those who objected were often redirected into essential civilian roles, such as farming, healthcare, civil defence or non-combat military work.
Those who refused all war-related duties faced prison sentences.
Certain professions, including doctors, nurses, farmers, engineers and bakers, were previously exempt.
With the Prime Minister now having signed an agreement to deploy British troops to Ukraine in the event of a peace deal with Russia, how close the world is to wider conflict remains uncertain.
Experts: “Conscription shouldn’t be dismissed”
Speaking to Reports, retired Lieutenant Colonel Stuart Crawford warned that conscription “shouldn’t be dismissed out of hand”.
“The British Army is the smallest it has been since Waterloo,” he said. “If we entered a major conventional war against Russia, we simply wouldn’t have enough troops.”
The UK currently has around 141,300 full-time personnel, compared with Russia’s force of more than 1.1 million soldiers. Britain spends 2.4 per cent of its national income on defence, while Russia spends around seven per cent.
“The Army prefers volunteers, one volunteer is worth ten pressed men,” Crawford explained. “But numbers matter. If we can’t recruit enough volunteers, conscription may become necessary.”
He added that “younger single men and women” would likely be the first demographic targeted.
‘Uniquely ill-defended’
Retired Army major and military historian Robert Lyman painted an even bleaker picture.
“Our armed forces have never been so denuded of power since the Napoleonic wars,” he said, claiming the UK is now in a worse position than it was in 1939.
“It’s really hard to describe how poorly prepared we are,” he warned.
“People talk about cyber warfare and drones winning the next war, that’s palpable nonsense.
“Wars are won by mass: intelligence, infantry, armour and artillery, properly coordinated with technology.”
Lyman cautioned that small armies don’t win wars, accusing the government of failing to act while Britain remains “uniquely ill-defended”.
As global instability grows and recruitment struggles persist, the debate around conscription, once thought unthinkable, is becoming harder to ignore.
