Analysis of information sources in references of the Wikipedia article "ชาวบริติช" in Thai language version.
[...] even the basic outline of the diaspora remains vague. It was never a controlled movement and it was mostly poorly documented. Migrants are always difficult to categorise and to count. [...] The scale of the modern British dispersion has been estimated at about 200 million, [...] or, counting those who can claim descent from British and Irish emigrants, more than three times the current population of the British Isles.
They were from a group of British people who held what became CUKC (citizens of the UK and Colonies) citizenship, and their children, who came to the UK between 1948 and 1973, mostly from Caribbean countries ... Chartered Institute of Housing: "the Windrush Britons often had compelling anecdotal and other evidence demonstrating their lengthy residence in the UK".
As many as 116,308 Afghan nationals are living as immigrants in the country, higher than any other country," Nisar told the House. Besides Afghans, 52,486 Americans, 79,447 British citizens and 17,320 Canadians are residing in the country, the interior minister added.