Can the UK Afford to Defend Itself?

Bloomberg OriginalsAbout 4 min readJun 20, 2025Watch original
THE SUMMARYAI-generated

Key Concepts:

  • Defense spending increase
  • British Army capabilities and size
  • Russian aggression and NATO
  • Fiscal constraints and trade-offs
  • Strategic Defense Review
  • Personnel shortages and retention
  • Ammunition reserves and procurement
  • Health and welfare spending vs. defense
  • NATO defense spending targets (2% of GDP)
  • Economic growth through defense investment
  • Research and development in defense
  • Defense industry capacity and contracts

1. The State of UK Defense:

  • The government announces the "biggest sustained increase in defense spending since the end of the Cold War."
  • Despite this, the British Army is at its smallest size since the Napoleonic era and losing personnel faster than it recruits them.
  • The UK's combat power is significantly diminished.
  • Security experts believe Britain is incapable of defending itself against a ballistic missile attack.
  • There's a gap between Britain's rhetoric/reputation and its actual military capabilities.
  • Examples cited: US support needed for UK troops in Iraq (2009) and Afghanistan.

2. Causes of Decline:

  • Personnel Numbers: The Army had around 100,000 personnel in 2010, but subsequent cuts have reduced this. The current target is 72,500, but the available strength is around 55,000.
  • Retention Issues: Losing trained personnel with operational experience is a major problem. Poor housing is a key factor in soldiers leaving early.
  • Strategic Defense Review: The government's latest review aims to return Britain to warfighting competitiveness, addressing low ammunition reserves and outdated procurement cycles.
  • Equipment Shortages: The UK has high-end equipment (e.g., anti-submarine warfare, long-range strike), but not enough of it. This limits training effectiveness.
  • Underinvestment: Successive Conservative governments have underinvested in troops, tanks, and training.

3. The "Peace Dividend" and Shifting Priorities:

  • Since 1955, there's been a correlation between increased health and welfare spending and cuts to defense spending.
  • This is referred to as the "peace dividend," where defense reductions are recycled into other areas like health or lower taxes.
  • In the 1950s, defense spending was 7.5% of GDP, and health spending was around 3%. These numbers are now almost flipped.

4. NATO and Defense Spending Targets:

  • NATO was formed in 1949 for collective defense.
  • The Wales Summit in 2014 set a target for members to spend 2% of GDP on defense by 2024.
  • Two-thirds of allies currently meet this target. Poland spends over 4%, and the US spends 3.4%.
  • It's widely accepted that no one pays enough for defense and that NATO relies heavily on the US. Some suggest a target of 5%.

5. The UK's Fiscal Dilemma:

  • Chancellor Rachel Reeves committed to raising defense spending to 2.6% of GDP by April 2027, funded by reducing foreign aid.
  • Mark Rutte committed to upping the NATO target to 5%.
  • Reaching 5% of GDP by 2030 would require an extra £87 billion annually, roughly equal to the UK's education budget or half of health and social care spending.
  • Bloomberg Economics estimates this would add £350 billion to government debt by 2032.
  • The government has ruled out raising income tax, VAT, corporation tax, or employee National Insurance contributions.
  • Borrowing is also problematic due to high interest rates and potential market reactions.
  • Polling suggests defense spending is a low priority for the British public compared to healthcare, immigration, or the economy.

6. Potential Solutions: Economic Growth Through Defense Investment:

  • Relying on high levels of defense spending to boost long-term economic growth is considered.
  • Focusing expenditure on domestic investments is crucial (e.g., not importing aircraft from the US).
  • Military spending focused on research and development (R&D) could lift UK productivity. Examples include autonomous drones rather than basic munitions.
  • Increased orders with defense contractors lead to jobs, worker spending, and tax receipts.
  • BAE Systems is cited as an example of a defense contractor increasing capacity based on prior agreements but seeking longer-term commitments.

7. The Paradox:

  • Britain's defense strategy is trapped by a paradox: a system designed for short-term survival is being asked to make long-term rearmament commitments.
  • The core issue: Everyone agrees Britain needs to prepare, but nobody knows whether it can afford to.

8. Notable Quotes:

  • "Britain is back on a war footing, but apparently in threadbare shoes."
  • President Trump's view: "2% is a start. But it's not enough. More like 5%."

Synthesis/Conclusion:

The UK faces a significant challenge in rebuilding its defense capabilities amidst fiscal constraints and shifting public priorities. While there's a recognized need to increase defense spending to meet NATO obligations and address growing global threats, the government faces difficult trade-offs and limited options for funding this increase. A potential solution lies in strategically investing in domestic defense industries and prioritizing research and development to stimulate economic growth, but this requires long-term commitment and certainty for defense contractors. The fundamental paradox remains: the need for long-term rearmament versus the limitations of a system designed for short-term survival.

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