Kent and Essex Police say that they are treating the deaths of two guests at a luxury hotel in Hertfordshire as "unexplained".
A man in his 30s and a woman in her 20s were discovered underwater in the Down Hall Country House Hotel's swimming pool last night.
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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