Horley - Watchlist site 128

Mixed waste has been burnt sporadically at a site in Horley, Surrey for several years, with waste tipping believed to have started at the end of 2022.

At times, the resulting smoke from the burning waste has been seen to drift across the adjacent M23 motorway, causing huge concern for, and potential danger to, passing motorists. Numerous fires have taken place at the site and the Environment Agency is working with Surrey Fire and Rescue Service to tackle the problem.

Our Environmental Crime team for the Kent and South London area have completed a number of visits to watchlist site 128 and are attempting to work with the landowner to clear the waste. We are monitoring any environmental risks posed by the site and may consider enforcement action. 

We will continue to monitor the site, assess environmental risks, work with our partners and the landowner in tackling this issue and take appropriate regulatory action where necessary.

We held a public meeting in December 2025 with residents and the local MP, who is aware of our work at this site and is in regular contact.