Defence Secretary John Healey's resignation letter and Starmer's response in full

Defence Secretary John Healey has resigned fromPrime Minister SirKeir Starmer's government.

In a letter to the prime minister, he said the UK's defence investment plan "falls well short of what is required for defence and the country at this dangerous time".

In his response letter, Sir Keir said the plan was backed with "the necessary investment" and lamented the minister's departure.

Here are the letters in full:

Dear Keir,

This is a letter I never expected to write, and I do so now with great regret and reluctance.

I am proud of what we have done in less than two years as a Labour Government. We've stepped up to lead internationally for Ukraine with the Coalition of the Willing and Ukraine Defence Contact Group, established Britain as a leading voice for Europe in NATO, raised defence investment to 2.5% of GDP three years earlier than anyone expected, launched the deepest defence reforms in 50 years, won the biggest UK defence export deals for decades, published a first-of-its-kind Strategic Defence Review, gave our Armed Forces the biggest pay rise in nearly 20 years, boosted military morale, fixed over 1,200 of the worst forces family homes, reset relations with European allies and signed major defence agreements with Germany, Norway and France.

You have led this as PM, earning wide respect at home and abroad. Like me, I know you are exceptionally proud of our Forces and all of those who work in UK Defence.

We came into government, recognising Britain faced a new era of threat which demanded a new era for defence. The SDR (Strategic Defence Review) we jointly commissioned set the 10-year vision to transform our Armed Forces, strengthen alliances, invest in the technology that is changing warfare and back British industry to make defence an engine for growth.

This new era for defence required further investment through the Defence Investment Plan (DIP). The excellent and extensive cross-government work that completed in January-overseen by you, me and the Chancellor - confirmed the scale of the challenge and the rising demands on defence.

Since then, you have been unable, and the Treasury has been unwilling, to commit the resources that the nation needs to defend the country at this time of rising threats.

Since then, the demands on defence have increased still further, as have the UK commitments you have rightly made to allies. Conflict in the Middle East, with the UK now leading the multinational Strait of Hormuz military mission; High North security, with the UK now leading NATO's Arctic Sentry mission; increased Russian activity towards the UK and NATO nations and increased attacks in Ukraine, with the Paris Agreement confirming a British deployment to Ukraine after a ceasefire.

We have worked to secure a Defence Investment Plan that does two things. First, deal with the increasing operational demands on defence now and step up the SDR actions to meet the increasing threat. Second, set a clear path to meet the new NATO commitment you agreed to spend 3.5% of GDP in 2035 through the next Spending Review.

As we have regularly discussed, I am certain that a headmark date for 3% of GDP on defence in 2030 is what Britain must set. This commitment would have strong cross-party support. Other European allies are stepping up in this way.

I know how hard you have worked to get to this point. And in funding the DIP, I fully recognise the strain this places on colleagues in other Departments, both now as you have required spending switched into defence and in the future. I am very grateful to those colleagues who have supported this, and I appreciate how difficult their choices will have been.

As I've outlined to you, there are credible ways of meeting the mid-term funding challenges, working multi-nationally and as other European nations are doing, to allow us to protect our ability to deliver the missions of our Labour Government.

However, your DIP financial settlement - which I was first given in full on Monday afternoon this week-falls well short of what is required for defence and the country at this dangerous time. The extra support is backloaded when the pressure of operations and imperative to speed up readiness to fight is in the first two years and it rises to just 2.68% of GDP in 2030, when we will reach 2.6% next year with the investment we are already making.

You spelled out the threats last week: "it is our intelligence assessment, and the assessment of other countries in NATO, that there could be an attack by Russia on NATO as soon as 2030."

You know what defence needs. You made the argument for this powerfully in your speech at the Munich Security Conference back in February. Without a DIP that meets the moment in this way, I am being forced to make decisions that would reduce the readiness of our Forces and increase the risk to personnel on operations, and could make the country less safe.

After explaining to you that I would not be able to accept a DIP settlement that does not give our Forces the resources they need, I am now left with no other option than to submit my resignation as your Defence Secretary.

I wish you all continuing strength in the exceptional challenges you face as Prime Minister.

As always, our Labour Government will continue to have my fullest support.

Rt Hon John Healey MP

Dear John,

The world today is more dangerous and uncertain than at any point in our lifetimes. That requires a serious response to build our economic resilience and our national defences.

We have achieved a great deal working together. We inherited a situation where our armed forces had faced years of underfunding and neglect. Our work leading the Coalition of the Willing on Ukraine, defending our Gulf allies, and working together with like-minded nations on a plan for the Strait of Hormuz has helped make the world more secure. I am proud of our record on funding.

When we entered government in 2024, I took the decision to increase defence spending after the Conservatives hollowed out our armed forces. That required a cut to the international aid budget but the result was the highest sustained increase in defence spending since the Cold War. I will always do what is needed to keep our country safe. I thank you for your work to deliver on all of this.

You are also right that we have to go further. The Defence Investment Plan does just that - delivering an unprecedented increase in defence spending in a sustainable way. It will provide the resources our military needs to keep us safe and the clarity the British defence industry needs to plan.

It will make the big strategic investments we need for the long term and give the certainty which private finance needs to invest. It will allow our armed forces to transform and modernise and back them with the tools they need to change the way we fight - and to deter our enemies. And crucially it will ensure the money spent is spent wisely and used to back jobs and growth here in Britain.

We are backing this with the necessary investment. The increases in spending that underpin this plan will be sustainable and fair. They will mean significant reallocations of funding from across government departments and the right choices to protect our nation. Strong public finances are part of what keeps us irresponsible borrowing only puts that at risk.

Taking these decisions is never easy. I am determined to rebuild our country after years of being buffeted by crises. I am sorry that you will not be part of that work going forward.

All best wishes,

Keir

THE RT HON SIR KEIR STARMER KCB KC MP