The Met police will launch a major new crackdown on crime, disorder and anti-social behaviour in the West End later today.
The campaign, called Operation Trafalgar, includes an area with a bed in it to help worse-for-wear revellers sober up.
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The one-year-old Yorkshire Terrier was attacked and killed while being taken for a walk.
The lifeboat crew carried the pair into their boat and dropped them off back at Tower Bridge as people watched from the riverside.
The huge painting took two graffiti artists thousands of hours to complete in east London.