Shoppers at a supermarket have renewed calls for improvements in the store's car park to help prevent gridlock and hour-long waits.

Frustrated customers using the Sainsbury's store in Kidlington have issued warnings after being stuck again as a result of night-time road closures from June 10 to 14. 

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Some drivers were reportedly stuck for more than an hour trying to exit from the store's single lane exit that feeds into Oxford Road and then into the roundabout. 

It comes after recent gridlocks including on May 18 when many Oxford United fans headed to the Oxford Parkway for the League One play-off final.

Some drivers told the Oxford Mail they were stuck in the car park for more than an hour at the time.

A Sainsbury's spokesperson apologised for the delays and said they were due to roadworks in the area. 

Oxfordshire County Council said construction work on the Kidlington roundabout, affecting A4260 and A4165, began on January 8 this year and was expected to continue until early July. 

The work is to create new dedicated bus lanes on the southbound Bicester Road, and new signalised crossing facilities on Bicester Road, Oxford Road south and Frieze Way.

There will also be reduced speed limits of 30mph on the roundabout and its approaches, while there will be a new 3.5 metre wide shared use pedestrian and cycle path to connect to existing infrastructure.