The Metropolitan Police has issued a new picture of PC Andrew Duncan, who died following a suspected hit-and-run collision in Sutton.
A further two men have been arrested in connection with the crash, after another was remanded in custody accused of causing death by dangerous driving.
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Two men have been taken to hospital after a "suspected acid attack" in east London.
Mr Gard and Miss Yates want to spend the final hours with their son at home in Bedfont, west London.
A ninth penguin was injured.