Warwickshire Police said the motorway was expected to stay closed for several hours.
The tanker had a tyre blow-out and caught fire closing the north and southbound carriageways.
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A study found that long-term use of certain anticholinergic drugs was associated with future incidence of the neurological disorder.
The UK and Germany were among major donors but aid agencies say its significantly lower.
A little drier towards the south tomorrow.