The A40 in Northleach in Gloucestershire is now closed due to an accident. Two cars were involved and there is queueing traffic between the A429 and the A361 High Street/Barns Lane.
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The Post Office said it was 'business as usual' but unions said Saturday's industrial action was getting solid support.
Workers and managers are to stage another strike on Saturday amid a long-running dispute over jobs, pensions and closures.
Cloudy in the West with a few showers. Sunny in the East but cold.