Ukraine’s desire to use western missiles to strike targets in Russia will not be the “sole issue” in Volodymyr Zelensky’s “victory plan”, Sir Keir Starmer said.

The US and UK have so far refused to give Kyiv permission to use the missiles they have supplied against targets in Russia, despite repeated pleas from Mr Zelensky.

The Ukrainian president has said that he is having to fight with his hands tied because he is unable to use the weapons to strike Russian airfields and military facilities which President Vladimir Putin is using to launch deadly air raids, missiles and drones.

Sir Keir is in New York for the United Nations General Assembly, where Mr Zelensky will present his plan for the next stage of the war to his allies.

The Prime Minister said: “I do think it’s going to take quite a bit of time at the UN General Assembly. And I think that’s really important, because it’s at a critical stage.

“Obviously, President Zelensky has a plan that he wants to walk through with all of us – we knew that was going to happen.

“The support for Ukraine is resolute. We supply quite a lot of capability already under the last government; we’ve increased that under this government – that’s not a criticism of the last government – and we will always listen very carefully to what Ukraine says it needs by way of capability.

“I don’t think that will be a discussion, I don’t think the victory plan will be about a sole issue like long-range missiles, it will be about a strategic, overarching route for Ukraine to find a way through this and succeed against Russian aggression.”

Pressed on when a decision will be made about the use of UK-supplied Storm Shadow missiles within Russia, Sir Keir said: “We will have discussions about a whole range of issues, and we will listen carefully to what President Zelensky’s got to say, and that’s what’s going to happen in the next few days.”