The M25 is closed in both directions in Hertfordshire because of a lorry fire and smoke blowing across the carriageway.
The section affects is between junction 21a for London Colney and junction 23 for South Mimms and the A1(M).
The Highways Agency says the road is expected to re-open from 3:00 pm.
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Cloudy with outbreaks of rain, mainly easing by dawn and lows of 7 deg C (45 deg F) overnight
The RSPCA's warning people about disposing of fishing litter correctly after a swan was found with a fishing hook through its tongue.
After a bright start it will become increasingly cloudy with rain later and top temperatures of 17 deg C (63 deg F)