21 people were arrested after the Met Police carried a special operation overnight to target criminals travelling across London. Officers were deployed on six bridges to pull over suspect vehicles. They also used knife arches at three London stations.
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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.