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Sarah Jones, the newly elected Labour MP for Croydon Central, raised the issue of knife crime in the House of Commons this week.

She tells Mark D'Arcy how she wants a comprehensive strategy to tackle the problem and the gang culture behind it.

You can hear more on all of the day's events at Westminster in Today in Parliament, weeknights on 蜜芽传媒 Radio 4 at 23.30, or catch up via the 蜜芽传媒 iPlayer.