Should the UK rejoin the EU? A breakthrough on defence, trade and fishing has some "Remainers" hoping Britain might be heading back into the arms of Europe. But experts are sceptical.
Britain pushes reset button on Europe
All smiles?: British PM Keir Starmer, pictured with European Commission president Ursula von der Leyen, said the deal was a "win-win", while former PM Boris Johnson called it "hopelessly one sided". Glossary
Nigel Farage - A British politician and broadcaster who has served as Leader of Reform UK since June 2024.
EU - European Union. An economic and political union of 27 countries.
Referendum - A direct vote by the population of a country on a particular law or issue.
Rebate - A refund to a person or group who has paid too much.
Single currency - When nations share one currency, such as various EU members who all use the euro as their national currency.
Schengen - The Schengen area is a zone in Europe with no border controls, allowing for the free movement of people.
Norway - A country in Scandinavia in northern Europe.
Switzerland - A country in central Europe, known for mountains, lakes and skiing.
Single market - Also known as a common market. When a group of countries agree to remove trade barriers, so border regulations do not apply to goods travelling between the countries.
Reform UK - A right-wing populist party in the UK. It has support from Nigel Farage and used to be called the Brexit Party.
Eurosceptic - Sceptical of the benefits of being part of the European Union.