Here is an extract from the former London mayor's Telegraph column:

"At last year’s Tory Party conference I drew attention to a worrying statistic about the way our society is changing. It is the number of times the salary of the average FTSE100 top executive exceeds that of the average – the average – employee in that company. This multiple appears to be taking off, at an extraordinary, inexplicable and frankly nostril-wrinkling rate.

Plato said no one should earn more than five times anyone else. Well, Plato would have been amazed by the growth in corporate inequality today. In 1980 the multiple was 25. By 1998 it had risen to 47. After 10 years of Tony Blair and Peter Mandelson – and their “intensely relaxed” attitude to getting “filthy rich” – the top executives of big UK firms were earning 120 times the average pay of the shop floor. Last year it was 130 times.

So what is it these fat cats like about the EU? Broadly two things. They like uncontrolled immigration, because it helps to keep wages down at the bottom end and so to control costs, and therefore to ensure that there is even more dosh for those at the top. A steady supply of hard-working immigrant labour means they don’t have to worry quite so much about the skills or aspirations or self-confidence of young people growing up in this country. And as denizens of Learjets and executive lounges, they are not usually exposed to some of the pressures of large-scale immigration, such as in A&E, or schools, or housing.

Then there is a more insidious reason – that the whole EU system of regulation is so remote and opaque that they are able to use it to their advantage, to maintain their oligarchic position and, by keeping out competition, to push their pay packets even higher."