Analysts say Britain’s armed forces – currently far smaller than during the Cold War – could struggle to meet the demands of a prolonged war.

British Army soldiers on Salisbury Plain (Image: Getty)
Fresh warnings that Britain must prepare for mass mobilisation in the event of a major war have once again raised the question of conscription – so would you be willing to fight? A report by the Royal United Services Institute (RUSI) has urged ministers to urgently scale up recruitment and plan beyond existing reserves, warning the UK may not be ready for a large-scale conflict.
Analysts say Britain’s armed forces – currently far smaller than during the Cold War – could struggle to meet the demands of a prolonged war without drastic expansion. Some experts have even suggested that conscription may need to be considered if volunteer numbers fall short.
Historically, the UK has only introduced conscription during major conflicts such as World War I and World War II, with men aged 18 to 41 initially called up, before the range widened significantly.
Today, there is no conscription in Britain, and the Armed Forces remain fully voluntary. Women have never been conscripted in the UK, although they now serve in all military roles.
The RUSI report warns mobilisation in any future conflict would have to go far beyond current systems, potentially involving wider society and industry – not just frontline troops.
With tensions rising globally and defence experts warning the “window for action is limited”, the debate is no longer theoretical.
