Oranges and Sunshine (2011)

Cast: Emily Watson, David Wenham, Hugo Weaving, Helen Grayson, Tara Morice
Director: Jim Loach
Summary: The film tells the story of Margaret Humphreys, a social worker from Nottingham who uncovered the childcare scandal of forcibly relocating poor British children to Australia and Canada and sets out to reunite estranged families and bring worldwide attention to the cause.

Based on Humphrey's book Empty Cradles

[Throughout the 1940's and 50's, some 130,000 young British children were forcibly shipped off to distant parts of the Commonwealth, some without their parents' knowledge, in order to "populate the countries with good white British stock". Once in places like Australia, New Zealand, South Africa, Canada and Rhodesia, these orphans were essentially treated as slave labour and some suffered sexual abuse at the hands of their new guardians. - Dark Horizons]

BFI video interview with director Jim Loach, writer Margaret Humphreys, Emily Watson, screenwriter Rona Munro
IMDb