Gemma Ball, 20, needed internal stitches to the flesh in her face after a man pulled a blade on her when she caught him in the back garden of her home in Stoke-on-Trent, Staffordshire.
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Harry Street, formerly Barry Williams, shot dead five people in a spree across the West Midlands in 1978.
The law was rolled out nationally in March. The Police and Crime Commissioner for Nottinghamshire has praised it's results in his area.