Public records provide limited information about Michael George Hart's early life. Details regarding his upbringing, education, employment history, and any prior criminal activity are not readily available in the public domain. As such, a comprehensive biography prior to the 1976 incident remains undocumented.

Michael George Hart was involved in a tragic robbery on November 10, 1976. During this robbery, a bank teller named Angela Woolliscroft was killed. Hart, disguised, threatened Woolliscroft with a sawn-off shotgun and demanded money. She handed him cash, but he fired the weapon, causing her fatal injuries.

Authorities launched a significant investigation led by Detective Chief Superintendent James Sewell of Scotland Yard. Hart was initially interviewed but had an alibi at that time. He had been at a police station in Basingstoke on bail for other crimes. However, later on November 22, he was involved in a traffic accident. Police discovered a .22 automatic pistol in his possession, which led to a search of his home. There, they found a box of cartridges that had been reported stolen.

The investigation eventually linked Hart to the murder weapon and the ammunition used in the crime. Forensic analysis of the cartridges showed that they matched the type of shot found in Woolliscroft’s body, despite initial inconsistencies in the labeling of the ammunition.

On January 20, 1977, Hart was arrested and charged with murder. During his trial, he pleaded not guilty to murder but guilty to manslaughter. He claimed that the shotgun went off accidentally when he tapped it against the glass. However, on November 3, 1977, Hart was found guilty by a jury and sentenced to life imprisonment. The judge noted that Hart was a dangerous criminal and recommended a minimum sentence of 25 years.

Hart was released on license in 2002 after serving part of his sentence. During his imprisonment, he participated in programs aimed at educating young people about life in prison.