The UK Parliamentary (General) Election is held to elect representatives to UK Parliament. These representatives are called Members of Parliament (MPs).
For the Parliamentary election, the country is split into constituencies and each constituency elects one representative. Different candidates stand for election in each constituency across the country, so each constituency has its own ballot paper with its own choice of candidates on. The leaders of the main parties do not appear on the ballot paper in every constituency.
The next UK Parliamentary Election will take place in 2024.
This follows the introduction of the Fixed-term Parliaments Act 2011 which received Royal Assent on 15th September 2011. The passing of the Act means that Parliamentary Elections will occur on a fixed timetable, every five years. The exception to this would be if either two-thirds of all MP's voted in favour of the dissolution of Parliament, or, if there is a vote of no confidence in the Government and a new Government fails to gain the confidence of the House of Commons within 14 days. If either of these scenarios occurred then a UK Parliamentary Election would be held.
You can find out which constituency you live in and who your MP is on the UK Parliament website.