Overview
- The treaty was signed in London on Wednesday, May 27, and formalises stepped‑up defence ties between Prime Minister Keir Starmer and Poland’s Donald Tusk.
- It commits both countries to co‑develop complex air‑defence munitions, including plans for co‑production of a medium‑range air‑defence missile to strengthen layered air and missile defence.
- The agreement foresees greater use of uncrewed systems and large joint land exercises to sharpen interoperability in counter‑drone operations, electronic warfare and engineering support.
- The pact creates enhanced cyber and information‑security cooperation to share expertise and coordinate real‑time responses to hostile state campaigns that the governments cite as including arson, cargo fires, cyberattacks and espionage.
- A new Joint Action Plan on Irregular Migration will boost intelligence sharing and target smuggling networks upstream as part of a broader UK strategy to rebuild practical security ties with European partners after Brexit.