NO traces of nerve agent have been found on a bus used by Dawn Sturgess and Charlie Rowley.

A statement from the Counter Terrorism Policing Network said: “The bus that Dawn and Charlie travelled on, on Friday night was identified and seized by Wiltshire Police on Wednesday 4 July - initially as a precautionary measure to check and ensure there was no risk to the public.

"It was subsequently taken to DSTL and following further scientific advice, the investigation team also carried out forensic enquiries on the bus as they look to establish the point at which Dawn and Charlie were contaminated with the nerve agent. Following tests, no traces of the nerve agent have been identified on the bus.

"The public health advice remains the same, with the current risk to the public remaining low, but anyone with concerns can call the dedicated helpline that has been set up in Wiltshire on 0800 092 0410.

"There are no reports of anyone who travelled on that bus having presented with the same symptoms.”

Last night police seized a car in Swindon in connection with the Novichok poisoning in Amesbury.

Workers in camouflage gear were seen collecting the white Audi from an address in the town. It was wrapped in cling film and taken from the address in Coronel Close off Ermin Street.

A Wiltshire Police spokesman said: "We have arranged the transportation of a car from an address in Swindon this evening in relation to the on-going incident in Amesbury. The public should not be alarmed by this. Those involved have the training & expertise to safely remove the vehicle."