European Union leaders plan to ask British Prime Minister Andy Burnham for a larger contribution to Ukraine when he attends a summit in Brussels on November 20.
The request reflects concern that Kyiv faces a €70 billion shortfall in 2027 for military and civilian needs while the cost of resisting Russian attacks continues to rise.
The European Commission says the EU and its member states currently meet about 80% of Ukraine's financial requirements, a level officials consider difficult to sustain alone.
Brussels regards two-thirds of the burden as a fair European share and wants other allies to finance the remaining third through predictable commitments.
A €90 billion EU loan agreed last year was intended to cover two-thirds of Kyiv's needs for 2026 and 2027, but intensifying strikes have expanded the projected bill.
Officials are prioritising Britain, Canada and Japan, while also looking to Switzerland, South Korea, Australia and New Zealand for additional pledges.
Britain has committed £25 billion since the war began, including £16 billion in military assistance, and remains among Ukraine's largest national donors.
The funding discussion will sit alongside a broader post-Brexit agenda, turning the summit into a test of whether renewed EU-UK cooperation can produce durable security commitments.
