For Londoners, 'Super Thursday' will be the most complicated election ever held. Sally Campbell demystifies the process.
There are three elections taking place on 10 June:
Which voting system is used?
Regional list system: The UK is divided into 12 regions (eg North East, North West, London, Scotland) and each elects a certain number of MEPs, so London is likely to elect nine, Scotland eight, North West ten.
Each political party puts forward a list of candidates for the region matching the number of seats (independents can also stand as individuals).