Livin' On A Prayer Bon Jovi
A mum from Essex whose teenage son was stabbed to death's taken part in a march past Downing Street.
16 year old Tommy Jones was killed in Beckton in September 2006 - He never got to meet his unborn son, who's now aged 3.
Melanie Hopwood still thinks the Government can do more to prevent knife crime and wants a life sentence for murder to mean just that.
Hear the mum from Harlow talking to Heart about her story, Saturday's march and what she has planned next.