Britain treated Jews from Germany in the 1930s as economic migrants rather than genuine refugees. Sounds familiar.
In 1938, Home Secretary Samuel Hoare told Parliament "very careful selection" should be made of Jewish Asylum Seekers to ensure they create jobs for Britons.
2/ From 1952 to 1960, the British used Concentration Camps, in then British Kenya, during the Mau Mau rebellion.
The use of castration ,& denying access to medical aid to the detainees by the British was widespread & common, as was slicing off ears to extract information.
3/ #Windrush - In the last decade, the British Government has deported people who came to the UK in the 60s because they didn't have 40 years of paper receipts to prove residence.