The UK Prime Minister met Türkiye's President Recep Tayyip Erdoğan on 22 September 2026 on the margins of the UN General Assembly, according to a 10 Downing Street press release published the following day. The leaders discussed the bilateral relationship, with the Prime Minister saying he wanted to maximise benefits for both countries. Trade between the two was increasing, he said, and they agreed to redouble efforts to finalise negotiations on an upgraded Free Trade Agreement.

On COP 31, the Prime Minister said he looked forward to attending the summit in November. After what the release called an extremely difficult summer, he said it was vital that climate change be taken seriously. On international affairs, he thanked Erdoğan for supporting the UK's recent measures targeting illegal settlements in the West Bank, saying it was not possible to back a two-state solution without following through with action.

The leaders discussed Black Sea security and agreed on the need for an energy ceasefire between Russia and Ukraine through the winter. The Prime Minister thanked Erdoğan for his efforts toward regional peace, and the two looked forward to meeting again in Antalya.