On 27 October 2026 in Warsaw, UK Defence Secretary Wes Streeting and Polish Deputy Prime Minister and Minister of National Defence Władysław Kosiniak-Kamysz signed a three-year Warsaw Defence Plan (Warsaw Defence Plan / Plan Współpracy Obronnej).
The document provides for deeper cooperation between the two countries in the maritime, land, air, cyber and industrial domains. Its aim is to strengthen security and deterrence on NATO’s eastern flank amid growing threats from Russia.
The plan represents the first practical phase of implementing a broader UK-Poland Security and Defence Partnership Treaty concluded several months earlier. According to the British side, the agreement demonstrates London’s readiness to play a more active role in European security and to build “a stronger Europe in a stronger NATO”.
Key areas of cooperation include:
- joint development and production of next-generation air defence missiles;
- development of drone and counter-drone technologies (including for the protection of critical infrastructure and civilians);
- strengthening of cybersecurity and resilience against threats;
- sharing experience on frigates (British Type 31 and Polish Miecznik, based on a common design) and increased defensive activity in the Baltic Sea;
- coordination of defence procurement and expansion of industrial capacity (including large-calibre ammunition production).
The ministers also reaffirmed their intention to continue joint exercises (including Steadfast Defender, Polish Dragon and Joint Warrior) and support for Ukraine. Wes Streeting noted that Poland remains one of the United Kingdom’s closest allies and emphasised the importance of joint deterrence of the adversary. Władysław Kosiniak-Kamysz stated that the Polish-British alliance has never been stronger and that the document demonstrates a shared commitment to developing modern technologies, joint training and strengthening defence capabilities.
The signing took place against the backdrop of intensifying hybrid threats, including drone incursions, and preparations for major Coalition of the Willing exercises in Poland in the near future. Official statements from both sides underline that the document is aimed at practically strengthening deterrence on NATO’s eastern flank and developing the defence industries of the two countries.
