We also have a 'first past the post' style of winning an election. This has led to parties, usually the Liberal Democrats, amassing perhaps a quarter of the votes, but because thy have come a close second in lots of constituencies, this has translated into only a handful of seats in the House of Commons. There are about 600 seats up for grabs, but sometimes they have got less than 10. Recently, the government held a referendum to see if the electorate wanted to adopt proportional representation but they rejected the idea. 
People prefer to have a constituency Member of Parliament, who they feel represents them, and who they can go to for help. MPs hold 'surgeries' each week in their constituencies, where it is possible to make an appointment to see them. They deal with all kinds of things that the public brings to their notice, local issues like maybe funding to a special school, road widening schemes that people oppose, or policing issues. I think this is a good system. It gives people a voice.