Mahmood Mattan's wrongful hanging in Cardiff
In March 1952 shopkeeper Lily Volpert was found with her throat cut in her Bute Street shop in Cardiff's Tiger Bay, and police charged Mahmood Mattan, a Somali ex-seaman and petty thief married to a white Welsh woman, on thin identification evidence. The prosecution withheld statements from witnesses who did not pick him out. Its key witness, Harold Cover, was paid reward money and gave shifting descriptions, and Mattan was hanged at Cardiff prison on 3 September 1952.