UK Homeland Defence

Lord Harris of Haringey Excerpts

Monday 23rd March 2026 Lords Chamber

Asked by

[Lord Harris of Haringey]

To ask His Majesty’s Government what assessment they have made of UK homeland defence in light of the long-range missile capabilities demonstrated by Iran in their strike on the Diego Garcia military base.

[Lord Harris of Haringey (Lab)]

My Lords, I beg leave to ask a Question of which I have given private notice, and in so doing I draw attention to my registered interest as chair of the National Preparedness Commission.

[The Minister of State, Ministry of Defence (Lord Coaker) (Lab)]

My Lords, noble Lords will be aware that the Secretary of State for Defence will shortly make a Statement in the other place, and I will not pre-empt what he will say. However, I will say that the UK has taken a series of actions to strengthen our collective defence. NATO remains the cornerstone of allied deterrence and defence. NATO’s ballistic missile defence system was designed to deal with precisely this type of threat. We have already seen it in action during this crisis, successfully intercepting missiles that were aimed at Turkey. The MoD is strengthening homeland security, investing up to £1 billion in capability, including air and missile defence, improved munitions stockpiles and readiness at scale to deter and respond to threats.

[Lord Harris of Haringey (Lab)]

My Lords, I am very grateful to my noble friend the Minister for that response. I am reassured by some of what he has said. However, it looks as though this Iranian capability is not necessarily hugely accurate and under those circumstances it may be difficult to be precise in terms of interception. What thinking is going on regarding guidance to people in this country about what to do in the event of some form of alert? Will there be alerts through the telephone emergency system? What will the guidance be for what people should do in the event of some form of incoming missile?

[Lord Coaker (Lab)]

First, the priority of the Government is to intercept any missiles, and the NATO umbrella is designed precisely to tackle that. Of the £1 billion that I outlined as a result of the SDR, we have committed to air defence and already started to spend some of that on various initiatives, including a £118 million contract to deliver state-of-the-art Land Ceptor missile systems to deal with some of the threat. My noble friend is right that, alongside the actions that the Government take to intercept the missiles, we need to talk to the public about the potential threats that they may face. Our assessment is that Iran poses no threat at the current time to the UK. However, we will, as my noble friend rightly keeps asking us, take the action needed to inform the public of the appropriate action that they should take in the event of any such threat coming about.