Wiltshire Constabulary Police Sergeant Nick Bailey A woman whose back garden overlooks DS Bailey’s cul-de-sac, said: “It’s very distressing to find this sort of event coming to your doorstep like this. We are worried, but all we can to is let the police get on with their investigation.” Theresa May with Wiltshire Police Chief Constable Kier Pritchard in Salisbury on ThursdayCredit:Toby Melville /PA Mrs May said: “We do hold Russia culpable for this brazen and despicable act that has taken place on the streets of what is such a remarkable city.” She added: “I have come down today to say thank you to our emergency services, our police and health services, and everybody at Porton Down and Public Health England who have been working so hard.” Mrs May met members of the emergency services and military at Salisbury’s Guildhall, including Pc Way and Pc Collins, two Wiltshire Police officers who were first to respond to the emergency call.PC Collins told the Prime Minister they had believed the incident was “a routine call”. Residents were being allowed to and from their homes, but only accompanied by a police officer. Neighbours said the operation began in the early hours, with police arriving in substantial numbers and sealing off the streets around his home.DS Bailey, who was among the first to attend to Mr Skripal and his daughter Yulia, before possibly examining their red BMW, where it is thought the nerve agent Novichok may have been placed, was initially discharged from hospital after a check up.He later admitted to Accident and Emergency at Salisbury District Hospital feeling extremely unwell. Police guard the home of Sergeant Nick Bailey beside an Army vehicleCredit:Jeff Gilbert for The Telegraph Meanwhile, Prime Minister Theresa May visited Salisbury on Thursday to speak to emergency services, members of the public and local businesses.She visited local businesses before surveying the scene at the Mill pub and the bench where the Skripals were found.Mrs May spoke about the impact of several police cordons on businesses in the city while being escorted by Wiltshire Police Chief Constable Kier Pritchard and Salisbury MP John Glen. Mrs May said: “You had no idea what you were dealing with. Thank you – what you did was what police do day in and day out. An Army crane was driven into position mid-morning in apparent preparation for loading DS Bailey’s car, which may have also been driven by his wife Sarah, 37, onto a low-loader.Neighbours said two cars were taken from the family’s driveway, one belonging to DS Bailey and the other to his wife. They said they were “wrapped” and removed by officers in hazmat suits. The family were not believed to be staying at the property on Thursday, but had been at the address in the days after the attack. DS Bailey is now described as in a stable condition recovering from the effects of the nerve agent. The Skripals remain in a critical and life threatening condition.His neighbours expressed alarm on Thursday at the latest turn of events.There were questions as to why it had taken more than a week since the attack for DS Bailey’s car to be removed.Roger Hooke, 79, a retired school maintenance worker, said: “We woke and saw lots of Army and police all over the place. It’s a bit disturbing.”Why is there so much concern about his house when it all happened in Salisbury? There’s a lot that we don’t know and it’s worrying.” Concern for the family of the police officer who went to the aid of the poisoned Russian spy has grown after Army and police sealed off his street and began work to remove his car for examination.Speculation grew that Detective Sergeant Nick Bailey may have carried traces of the nerve agent Novichok home with him after attempting to resuscitate Sergei Skripal and his daughter Yulia.Police erected a wide cordon around DS Bailey’s street, in the village of Alderholt, 20 minutes drive from Salisbury on Thursday.At the same time, soldiers set up tents and began unloading equipment such as boxes and tables on a village green yards from his semi-detached house in a quiet cul-de-sac.Firefighters in chemical protection suits were seen preparing to begin the operation to remove the officer’s family car. The Metropolitan Police said it would not comment on specific searches or aspects of the operation.A spokesman said: “We are pursuing various lines of inquiry at various location in connection with the incident in Salisbury.” Police and ambulance vehicle outside the property in the village of AlderholtCredit:Patrick Sawer “A routine call and you don’t know what’s there. You did a great job.”Mrs May said: “What is important in the international arena – and we have taken this into Nato, into the United Nations, take it through into the European Union – is that allies are standing alongside us and saying this is part of a pattern of activity that we have seen from Russia in their interference, their disruption that they have perpetrated across a number of countries in Europe.” Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings.