19 October 1989 The convictions of the Guildford Four are quashed by the Court of Appeal of England and Wales, after they had spent 15 years in prison.
Guildford Four, article from This Day In History https://www.history.com/this-day-in-history/guildford-four-are-cleared

THE GUILFORD FOUR  - Andy White       https://www.youtube.com/watch?v=1-cdYuiCwaU
THE GUILFORD FOUR   - The Wolfe Tones       https://www.youtube.com/watch?v=-tmEnQ5hXTY