The image below show the number of hot food takeaways around secondary school in Newham. The red triangles indicate the location of secondary schools. The dark areas show the highest densities of fast food outlets.
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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.