Ukraine will gain an immediate boost to its air-defence stocks after the United Kingdom pledged £100m of military equipment intended to protect population centres through the winter. The package is meant to address gaps in interceptors and missiles that analysts say have contributed to a fall in successful interceptions amid continued Russian strikes.

The shipment is being routed through NATO’s prioritised Ukraine requirements list and includes Patriot missiles, defence interceptors, large-calibre artillery rounds, and surveillance and attack drones. Military analysts linked the recent drop in interceptions to a dwindling supply of Patriot missiles, making replenishment a tactical priority for Kyiv’s air-defence network.

Wes Streeting, the UK defence secretary, will co-chair his first meeting of the Ukraine defence contact group on Tuesday with German counterpart Boris Pistorius. The contact group, which brings together around 50 nations that supply military kit to Ukraine, is intended to turn broad pledges into equipment deliveries and usable capability at the front.

Streeting framed the £100m package as part of a wider effort to mobilise allies and strengthen Kyiv’s ability to defend civilians. He said, “We will stand shoulder to shoulder with Ukraine until they win,” and added that visits to Kyiv had stressed the importance of support for the winter months as Vladimir Putin prepared to press attacks on civilian and energy targets.

The UK also agreed to declassify blueprints for British-made components for the Scalp missile, the French-produced version of the Storm Shadow, a move intended to speed up production and integration of munitions supplied to Ukraine. Separately, the UK prime minister, Andy Burnham, spoke by phone with US president Donald Trump; they discussed the conflict and agreed on the need to keep working towards a ceasefire to prevent further loss of life.

US envoys visited Kyiv for talks described as encouraging, though no breakthrough to end the war was reported. Ukrainian president Volodymyr Zelenskyy said it appears the war will continue into winter. The immediate next step is the contact group meeting, where allies will be expected to translate the UK contribution and other pledges into deliveries, logistics and operational support to shore up Ukraine’s air defences before the colder months.