Surprised nobody has already commented on this yet.
A very powerful BBC drama (based on one man's experience) on how the Home Office scheme to get residents of this country for 50 years or more to prove their right to be here was handled. The Windrush scandal.
Please watch it, although it's harrowing when you think you live in a country with certain values. Seeing a man sent to a detention centre and being told he was about to be deported having lived in London since the 1960s.
Timing of this has clashed with the recent BLM controversy, but with the vast majority of people still awaiting compensation from the UK government maybe that will help the wheels move a little quicker.