Our reporter James Crichton-Smith says crews could be at the scene for the rest of the day.
Firecrews have spent a second night dealing with a large fire that's destroyed a recycling plant in the Vale of Glamorgan.
Nearly 20 firefighters are currently at the SiteServ plant in Llandow. The blaze started on Tuesday evening.
Fire investigators are still trying to find the cause of a massive blaze that has destroyed a recycling plant in the Vale of Glamorgan.
The fire at the Siteserv plant in Llandow is now under control, but is still likely to burn for a couple of days.
Residents in the area have been told to keep doors and windows closed because there is a risk of asbestos. But the fire service say that today's rain means it will not cause a danger to the public.
Richard Morgan reports.