Firefighters were called to a severe oil leak on the M25 near Watford this afternoon.
Fire engines from Garston, Hatfield and Hemel were mobilised following reports that there was a lorry fire between Junction 20 and Junction 21 of the M25 at 3.21pm.
When crews arrived it was revealed that there was no fire, but a severe oil leak.
Highways are now dealing with the spill.
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