Mayor of London Boris Johnson says the fourth plinth has become an important part of London's art scene:
"I am immensely proud to support the Fourth Plinth, which has become a must-see cultural attraction for London, one that underpins the capital's status as a great world city for art. Just a few minutes walk away from Trafalgar Square itself, this exhibition promises a fascinating journey through the work of some of the best international artists working today."
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The 52-year-old had previous convictions for violence but was not on the anti-terror watchlist.
In a statement Charlton Athletic said: Keith was a true hero who will be greatly missed by all the Charlton family and everyone at the club.
London and the worlds has united on Twitter in defiance of the West minster attack #prayforlondon #wearenotafraid