Is this healthy democracy at work? The UK's next leader is walking into a very tough job. Some think the real winner will be one of UK politics' most famous faces.
The man who could be shadow PM in 10 days
Glossary
EU - European Union. An economic and political union of 27 countries.
UK Independence Party - A Eurosceptic, right-wing populist party in the United Kingdom, founded in 1993. Its most prominent figure was Nigel Farage, who has since left for the Reform Party.
MP - Member of Parliament. There are 650 MPs representing people in different areas of the UK.
Reform UK - A right-wing populist party in the UK. It has support from Nigel Farage and used to be called the Brexit Party.
General election - In the UK, when an election is held for all 650 members of the House of Commons. One must take place every five years.
Prime minister - A prime minister is the head of government in a country with a parliamentary system.
Labour - Britain's main left-of-centre political party.
Conservatives - A traditionally right-wing or centre right political party in the UK. Members are sometimes called Tories.
Keir Starmer - The leader of the UK Labour Party since 2020 and British prime minister since July 2024.
Democracy - A system of government based on the idea of rule by the people.
Climate change - Long-term shifts in temperatures and weather patterns. Human action is a major cause of climate change.