London deer population 'exploding'
12 August 2013 Last updated at 16:58 BST
The deer population is exploding in parts of London, according to wildlife experts.
Experts say understanding deer numbers is crucial to monitoring their impact on the natural environment and ensuring their safety.
BBC London's Tom Edwards spoke to Tom Hayward, from the London Wildlife Trust, and councillor Andrew Curtin, from Havering Borough Council.