The Commons -- which has green benches -- currently consists of 650 directly elected lawmakers known as Members of Parliament or MPs who each represent a geographical constituency . A general election must take place in the UK at least every five years . The last time this happened was in 2015 when there were two inconclusive General Elections and Britain Power in the UK parliament rests with the lower house , known as the Commons . The last parliament where no party had a majority was in 1974 -- analysts predict it will happen in 2010 .
A general election must take place in the UK at least every five years . The last time this happened was in 2015 when there were two inconclusive General Elections and Britain Power in the UK parliament rests with the lower house , known as the Commons . The last parliament where no party had a majority was in 1974 -- analysts predict it will happen in 2010 .