In 1947 the British television audience was confined to the London area, within range of the transmitter at Alexandra Palace. (It was not until 17 December 1949 that viewers outside the capital could share the delights of the new medium.)
UK television audience 1947
Yet, seven years later, when TV sets still cost upwards of £80, the composition of the market has changed quite radically. The majority of TV homes in 1954 belong to Class III in the less segmented classification then used. By now, the year after the fillip given to the television market by the Coronation, the number of TV households has grown to 3.25 million.
UK television audience 1954
Source: B P Emmett: 'The Television Audience in the United Kingdom' in Journal of the Royal Statistical Society, 1956.