Last year the UK government issued a formal apology to those affected by the Windrush scandal, after many people were told they were not in the UK legally and a number were removed from the country.
Y llynedd, ymddiheurodd Llywodraeth y DU yn ffurfiol i'r rheini a ddioddefodd yn sgil sgandal Windrush, ar ôl i lawer gael gwybod nad oedd hawl gyfreithiol ganddynt i fod yn y DU.