Cold case murder detectives have launched a fresh appeal to help solve the killing of Norfolk sex worker Natalie Pearman.
Natalie was 16 when she was found dead in woodland close to Ringland, outside Norwich.
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Essex Police is increasing armed patrols across the county following the terror attacks in London.
A timeline of exactly what happened.
The car reportedly used as part of a terror attack in Westminster was registered in Chelmsford.