The number of police officers in England and Wales has dropped for the fourth consecutive year - by 3.4 percent or 4,516 - taking the total to its lowest level since 2002, the Home Office said.
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Tony Davies was the first civilian to reach Pc Palmer after he was stabbed during the Westminster attack.
Defiant Londoners put on a show of solidarity for the victims of the Westminster terror attack at a vigil in their honour.
Weather set to improve with plenty of sunshine by Saturday