Leftists even talk of non-White immigrants rebuilding Britain after the Second World War, thus giving them a permanent stake in the country. This is usually in reference to events in 1948, when 1027 passengers were carried from Jamaica to London on the HMS Windrush, a voyage that has become symbolic of Britain’s transformation to a multicultural country. There is often a sense that after this Britain embraced multiculturalism and entered an inexorable path to its current state, but this is quite far from the truth.

...

In a British government meeting in 1955, proposals were debated for the creation of “an independent committee of enquiry into coloured migration”, noting that “the first purpose of an enquiry should be to ensure that the public … were made aware of the nature and extent of the problem: until this was more widely appreciated the need for restrictive legislation would not be recognised”.

In 1962, the public had indeed grown more hostile to the problem, and the Conservative government of Harold Macmillan passed the Commonwealth Immigrants Act, which, for the first time, legally curtailed free movement for citizens of Commonwealth countries. Everyone born outside with UK or without a UK passport was now subject to stricter immigration controls. Up to this time, there was an ambiguity in British law that allowed any citizen of a commonwealth country to immigrate to Britain. By this time, the government favoured the entry of Irish and other White immigrants to the UK, but wished to restrict the entry of others. The result was a voucher system which was seen as discriminating on the basis of race.

Many would be interesting to see that happenign right after WWII.

The nail in the coffin:

Without question, the majority of blame for the UK’s rapid demographic transformation rests at the feet of New Labour. As late as 1991, the UK was still 95% White. When New Labour took government in 1997, net migration to the UK was typically about 50,000 per year, a figure Labour and Conservatives had tacitly agreed to. By Labour’s second term from 2005-2010, this had quintupled to 250,000 per year. By the time they left office, Tony Blair and Gordon Brown’s Labour had added 2.7 million new arrivals to the UK workforce.

Britain’s Demographic Transformation

New Labour and the making of the migration state

^{The Unz Review}