All lanes of the M1 are now open after the accident involving five lorries between Junction 25 and 26.
The motorway is still congested with journeys between junctions 24 and 25 taking 40 minutes.
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After a rather cloudy start, the cloud will break up leaving a breezy day with sunny spells and scattered showers.
Sunny spells and scattered showers will develop during the morning. Some of these will become heavy and thundery after midday.
Cloudy with further outbreaks of rain, which are likely to become heavy at first. Staying generally dry after midnight.