Watch the report by Mel Barham on the day Phillip Sherriff's killer was jailed for at least 14 years.
His widow is now campaigning for glass bottles to be banned from pubs and clubs.
The judge jailed the graphics designer for a split second of madness in a club, which killed the father-of-two.
Both men had travelled to London for a Jessie J gig. Ashley Charles attacked Phillip Sherrif with a broken bottle after some jostling at the bar. The judge said the bottle was a lethal weapon and the victim was a decent man.
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Pictures of today's events unfolding following a major security incident at the Houses of Parliament.
At least two people have died after a knifeman brought terror to the heart of Westminster.
The Cobra committee brings together government ministers with senior officials of the emergency services and security agencies.