"...up to around 1950, Britain was a very law abiding country. Crime rates were about 10 per cent of what they are today. Many cars did not have locks because it was taken for granted that no-one would attempt to break into them. An uncle of mine made a living as stamp dealer. He used to send out booklets of stamps each of which was priced to potential purchasers, who would take out those they wanted and send back the booklets together with a cheque for those they had taken. No doubt it will be amazing to the younger generation today that it was possible to run a business in this way.
Third, and again up to around 1950, Britain was an all-white society. I do not remember ever seeing a non-European before this time. This began to change as a result of two developments.
The first was the British Nationality Act of 1948, which conferred citizenship and the right to live in Britain on all members of the Commonwealth and Empire. The Commonwealth comprised Australia, Canada, New Zealand, and South Africa, while the Empire consisted of the Indian sub-continent, about one third of sub-Saharan Africa, Hong Kong, Malaysia, most of the Caribbean islands, and a number of smaller territories. This act meant that huge numbers of non-Europeans—some 800 million—had the right to live and work in Britain. Curiously, the probable consequences of this act were not much debated in the House of Commons..."
Prof. Lynn is deeply pessimistic about the fate of the European nations and thanks the Chinese, Japanese and Koreans for taking up the torch of civilization. (From an interview with A. Kurtagic)