Wales and West Utilities has shut one lane of Wootton Bassett Road between Redposts Drive and Westcott Place. Drivers are still able to use the westbound carriageway from Old Town towards west Swindon.

Traffic is being diverted eastbound down Redposts Drive and through Wichelstowe. Delays are mounting.The firm says the Kingshill latest work - from February 17 to 21 - is 'essential to keep the gas flowing to heat homes and power businesses and so local people are kept safe and warm for generations to come'.

Signs will be in place and the area will be marshalled between 7am and 7pm.