Any parents worried about their children's school food is asked to call Westminster City Council's advice line, which is open from 8am tomorrow.
The number is 020 7745 6401
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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