The election resulted in a narrow victory for the Labour Party, led by Prime Minister Harold Wilson, which won a wafer-thin majority of three seats, the narrowest in modern British history.
It led to the eventual defeat of the government in a no-confidence motion in March 1979, six months before the mandatory dissolution of Parliament was set to take place.
Following the inconclusive nature of coalition talks between the Conservatives and other parties such as the Liberals and the Ulster Unionists, the Labour Leader Harold Wilson went on to form a minority government.
Despite continuing high inflation, Labour boasted that it had ended the miners' strike, which had dogged Heath's premiership, and had returned some stability.
The Conservative Party, led by Leader of the Opposition and former Prime Minister Edward Heath, released a manifesto promoting national unity, but its chances of forming a government were hindered by the Ulster Unionist Party refusing to take the Conservative whip at Westminster in response to the Sunningdale Agreement of 1973.
The election was broadcast live on the BBC and was presented by David Butler, Alastair Burnet, Robert McKenzie, Robin Day and Sue Lawley.