Just over 50 years ago, there was an election, the first one that I was around for (if not eligible to vote). One party other than Conservative or Labour won 9 seats, 1.4% of the total (and that includes Northern Ireland). It was thus almost certain that either Labour or the Conservatives would win a majority. It was pretty much the zenith of the two-party system.
In May, we'll have an election. The
current forecast is that nine parties other than Conservative or Labour will win a total of 86 seats, 13.2% of the total. It will thus be very difficult for either the Conservatives or Labour to win a majority. We are in for interesting times, politically speaking.