UK joins Trans-Pacific trade pact after Mexico ratifies accession

The United Kingdom's accession to the Comprehensive and Progressive Agreement for Trans-Pacific Partnership (CPTPP) has officially taken effect, marking a significant expansion of the trade bloc.

Following ratification by Mexico, the UK's membership became active on June 22, allowing both nations to implement the agreement's provisions. The CPTPP, a trade pact involving 12 countries from the Americas, Asia, Oceania, and Europe, now welcomes the UK as its newest member, and the first to join since the treaty's establishment.

Mexico, a founding member of the CPTPP since December 2018, anticipates that the UK's inclusion will bolster bilateral economic relations. The agreement is poised to eliminate tariffs on industrial and agri-food products, thereby facilitating increased trade between the two nations. Furthermore, the rules of origin within the CPTPP framework are expected to promote greater integration into respective value chains for both Mexico and the UK.

This development is particularly timely as global supply chains undergo reconfiguration and countries seek more diversified markets. The CPTPP's expansion with the UK's entry is seen as strengthening Mexico's position as a global trade and investment hub. It also aims to foster closer economic links with Europe, the Asia-Pacific, and the Americas through a unified set of trade rules.

In 2025, trade between Mexico and the UK reached $6.293 billion. The CPTPP is projected to support key investment sectors in Mexico, including the automotive, aerospace, and pharmaceutical industries, by encouraging investment and technology transfer to boost production.