A major sewage pollution incident has occurred on the River Crane and we are advising local residents to keep themselves and their pets out of the water.
We are working closely with relevant agencies to assess the situation and minimise damage.
The Environment Agency estimates that 3,000 fish have been killed.
We encourage people to keep an eye on the London Wildlife Trust website for any updates and to send us any information and evidence on how it is affecting you and your local area to enquiries@wildlondon.org.uk