On Wednesday, September 3, 2025, a significant step was taken in London as the leaders of Spain and the United Kingdom met to sign a new cooperation deal, aiming to usher in a fresh era of post-Brexit relations between the two nations. The meeting, held at the iconic 10 Downing Street, brought together UK Prime Minister Keir Starmer and his Spanish counterpart, Pedro Sánchez, in a display of diplomatic optimism and mutual respect.
The agreement, as reported by AP and other news outlets, is designed to strengthen cooperation on economic growth, migration, and a host of other shared interests. For both countries, the deal marks a notable shift after years of uncertainty and halting progress that followed the UK’s departure from the European Union in 2020. The unresolved status of Gibraltar—a small but strategically significant British territory at the southern tip of the Iberian Peninsula—had long cast a shadow over relations. Now, with this new bilateral agreement, both sides are signaling a renewed commitment to collaboration and stability.
Greeting Sánchez at his offices, Starmer emphasized the close ties between the UK and Spain, reflecting on the historic and economic bonds that have connected the two countries for centuries. According to APA, Sánchez, for his part, commended Starmer and his government for breaking the post-Brexit deadlock on Gibraltar, a lingering issue that had stymied progress since the UK left the EU.
The timing of this agreement is no coincidence. It follows a breakthrough in June 2025, when the UK and Spain, with the involvement of the European Union, brokered a deal to remove border checks at Gibraltar over the summer. That agreement was hailed as a turning point, allowing both people and goods to flow freely across the border between Gibraltar and Spain—something that had been in limbo since Brexit became a reality.
Gibraltar’s unique position has always made it a focal point of UK-Spain relations. The territory, home to about 34,000 people, sits at the very tip of the Iberian Peninsula, its only land border shared with Spain. The local economy and daily life are deeply intertwined with the surrounding Spanish region, with many workers commuting across the border each day. As reported by multiple outlets, Gibraltar voted overwhelmingly to remain in the EU during the 2016 Brexit referendum, but ultimately left the bloc with the rest of the UK in 2020.
Since then, the status of Gibraltar had been unresolved, with both sides and the EU struggling to find a workable solution for the post-Brexit situation. Talks on a deal to ensure the smooth flow of people and goods across the border had made only slow and sometimes frustrating progress. The June 2025 agreement, therefore, was a breath of fresh air, opening a new chapter in UK-Spain relations and paving the way for further cooperation.
The new cooperation deal signed this week is the first major bilateral agreement to follow that Gibraltar breakthrough. According to official statements, it is intended to bolster ties in several crucial sectors, including economic growth and migration. Both governments have stressed the importance of deepening their partnership in areas where their interests align, and the agreement is expected to provide a framework for joint initiatives and regular dialogue going forward.
For Prime Minister Starmer, the deal is an opportunity to demonstrate the UK’s ability to forge strong international partnerships in the post-Brexit era. His government has made it clear that while the UK is no longer a member of the EU, it remains committed to close cooperation with European neighbors on a range of issues, from economic policy to migration management.
Pedro Sánchez, too, has reason to welcome the agreement. Spain has long advocated for a pragmatic and constructive relationship with the UK, particularly given the shared interests and challenges surrounding Gibraltar. In his remarks at Downing Street, Sánchez praised the willingness of both sides to find common ground and move beyond past disagreements. As he put it, the new deal is a testament to "the power of dialogue and mutual respect" in international relations.
While the specifics of the cooperation deal have not been fully disclosed, officials from both countries have highlighted its focus on practical outcomes. The agreement is expected to facilitate greater economic exchange, support joint efforts to address migration flows, and encourage collaboration in sectors such as tourism, education, and technology. Given the economic significance of cross-border trade and labor mobility—especially for communities around Gibraltar—these measures could have a tangible impact on daily life for thousands of people.
It’s worth noting that the agreement does not resolve every outstanding issue between the UK and Spain. The question of Gibraltar’s ultimate sovereignty remains a sensitive topic, and both governments have been careful to frame the deal as a pragmatic step forward rather than a final resolution. Still, the removal of border checks and the establishment of a clear framework for cooperation are widely seen as positive developments, reducing uncertainty and building trust between the two countries.
The broader context is also important. Since Brexit, the UK has been seeking to redefine its relationships with European partners, balancing its newfound independence with the practical need for close cooperation. Agreements like this one, which focus on shared interests and mutual benefit, are likely to become increasingly important as the UK charts its course outside the EU.
For Spain, maintaining a stable and productive relationship with the UK is vital—not just for Gibraltar, but for the millions of Spanish citizens who travel, work, or do business with the UK each year. The new agreement signals a willingness to look past the turbulence of recent years and focus on common goals.
Observers say that the deal could serve as a model for other post-Brexit bilateral agreements, demonstrating that even after a period of uncertainty and disagreement, pragmatic solutions are possible. The emphasis on economic growth, migration, and practical cooperation reflects the priorities of both governments and the realities faced by their citizens.
As the dust settles on the latest round of negotiations, there is a sense of cautious optimism in both London and Madrid. The new cooperation deal may not solve every problem, but it represents a meaningful step forward—one that could help to rebuild trust, strengthen ties, and ensure that the UK and Spain remain close partners in a rapidly changing world.
For the people of Gibraltar, the removal of border checks and the promise of continued cooperation offer a measure of stability after years of uncertainty. For policymakers in London and Madrid, the agreement is a reminder that even the thorniest issues can be addressed through dialogue and compromise. As both countries look to the future, the hope is that this new chapter will be marked by collaboration, mutual respect, and shared prosperity.