One of the victims to die in the Bali bombings was Londoner Dan Miller.
He died in the 2002 blast just five weeks after he'd got married. His wife Polly Brooks survived, but suffered terrible burns.
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Police are investigating whether a Land Rover Defender found burnt out in West Horsley was involved in Tuesday night's ram raid.
The work, called Gift Horse, replaces the giant blue cockerel that previously sat on the plinth.
50 of the country's worst pollution blackspots are in the capital. Many in places you may visit every day.