Opposition MPs have accused ministers of weakening Britain's position overseas after a post-Brexit agreement on Gibraltar removed border barriers with Spain and brought the British Overseas Territory into the EU's Schengen free movement zone. The deal, signed in Brussels by Foreign Office minister Stephen Doughty alongside EU Brexit point man Maroš Šefcovic and Spanish foreign minister José Manuel Albares Bueno, has triggered a political row over sovereignty and the future of other British overseas territories.
What the Gibraltar Agreement Entails
The treaty, which came into force overnight, removes 118-year-old border infrastructure at the frontier with Spain and makes Gibraltar effectively part of the Schengen zone for travel purposes, although it does not formally join the European Union. Under the new system, visitors will face Schengen border checks when entering Gibraltar, and Britons travelling to the Rock must show passports, with Spanish guards having the final say on who can enter the territory and, by extension, the wider Schengen area. Gibraltar will remain British territory, but the arrangement has prompted accusations that the Government has compromised sovereignty.
Gibraltar Chief Minister Fabian Picardo backed the agreement and attended the signing ceremony. Spanish Prime Minister Pedro Sánchez welcomed the changes, describing them as bringing down “the last wall” inside the EU. The deal is expected to benefit approximately 15,500 workers from Spain who cross the border daily for employment in Gibraltar, which covers just under seven square kilometres and boasts one of the highest per capita incomes globally, driven by financial services and online gaming.
Political Backlash and Accusations of Surrender
Reform MP Robert Jenrick criticised the Government, saying: “This Government has proven itself completely incapable of defending our national interest. They fold easier than a deckchair. Why are Brits being made to show their passport to Spaniards to enter British territory? Reform UK and Nigel Farage will finally put our country first.” Reform MP Andrew Rosindell added: “Having betrayed Britain's sovereignty over the Chagos Islands, this Government has now turned its back on Gibraltar. Requiring Britons to face Spanish involvement when entering British territory is an unacceptable concession. Gibraltar has been British since the 1713 Treaty of Utrecht and must remain so. If ministers are prepared to compromise Gibraltar today, which British Overseas Territory will they put at risk tomorrow?”
Shadow Armed Forces Minister Mark Francois linked the Gibraltar deal to wider concerns, stating: “It's a fitting end to Starmer's Government that it concludes with even further weakening of our sovereign borders. Once Labour showed weakness over Chagos, other nations smelt opportunity - and we are now under pressure over the sovereign base areas in Cyprus and Argentina, which is reviving its false claim to the Falklands.” Former Tory Brexit minister David Jones, who has since joined Reform, called the agreement “an outrageous, pathetic surrender by the British Government” and “another unforced surrender.” Former Defence Secretary Sir Gavin Williamson added: “The government seems intent on giving everything away. First Chagos, next Gibraltar. They seem to have little care for Britain's strategic interests or the people that live there.”
Broader Sovereignty Concerns: Chagos, Falklands, and Beyond
The Gibraltar controversy follows the Government’s agreement to transfer sovereignty of the Chagos Islands to Mauritius while retaining access to the Diego Garcia military base through a 99-year lease, reportedly costing around £35 billion. That deal has faced criticism from US President Donald Trump and warnings that other overseas territories could face pressure. Argentina has renewed its claim to the Falkland Islands, with Argentine foreign minister Pablo Quirno describing Falkland Islanders as an “artificially implanted” population. While Prime Minister Sir Keir Starmer rejected Argentina’s claims, opponents warn that any perceived weakening of Britain’s position could encourage further challenges. The Gibraltar agreement has intensified the political debate about how Britain protects its overseas territories and strategic interests worldwide.
