Hundreds of long-term sick and mentally ill people from the Windrush generation were sent back to the Caribbean in what has been described as a "historic injustice", the BBC has found.
Formerly classified documents reveal at least 411 people were sent back between the 1950s and the early 1970s, under a scheme that was meant to be voluntary.
Families say they were ripped apart and some were never reunited.
The UK government said it was committed to tackling the injustices of the era.
A spokesman said: "We recognise the campaigning of families seeking to address the historic injustice faced by their loved ones, and remain absolutely committed to righting the wrongs faced by those in the Windrush generation."
The revelations - which echo the Windrush scandal, in which hundreds of Commonwealth citizens, many from the Caribbean, were wrongly deported - have sparked calls for a public inquiry into the repatriation policy.
Those sent back were among thousands who moved from British colonies to the UK in the decades after World War Two. They were known as the Windrush generation, named after one of the first ships to arrive in the UK, the HMT Empire Windrush. This year will mark the 75th anniversary of the first arrivals.
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