The New Statesman has an analysis of how Britain under Thatcher reduced social mobility and increased income inequality:
In 1945, when Thatcher turned 20, the richest 0.01 per cent people in Britain received 123 times the mean national average income. By the time she turned 40 in 1965 that had halved to 62 times, and the year before she came to power, in 1978, it was at its minimum: just 28 times the average income…
TV programme called Breadline Britain [...]released the results in 1983. Its startling finding was that the spike in unemployment figures that Thatcher had tolerated and the shift in income from poor to rich had resulted in a rapid increase in poverty, so that one in seven people was living in poverty by the early 1980s. This was a sharp rise above levels experienced after the end of the 1960s.
Frank Turner has a (NSFW) take on this.