Thirty firefighters have tackled a large field blaze which caused chaos for motorists.

A large hay baler carrying 24 one-tonne hay bales, and six acres of stubble and 100m of hedgerow caught fire at Middle Aston at about 11.20am today.

Five fire crews tackled the blaze for almost three hours and police were forced to close the southbound dual carriageway on at A4260 between North Aston Road and the B4030 for about an hour from midday because smoke was obscuring drivers' view.