[custom_adv] More than 200 people, including several MPs, have been contacted by health officials over fears they could have been exposed to the coronavirus at a conference in central London. [custom_adv] Public Health England (PHE) wrote to those who were at the UK Bus Summit at the QEII Centre in Westminster on 6 February after it emerged one of the delegates had tested positive. [custom_adv] Two of the MPs who attended the conference said they have decided to stay at home after health officials advised people who may be suffering to self-isolate. The Transport Times bus summit is an annual event, but one that attracted more enthusiastic delegates this year to the heart of Westminster after major political parties raised buses up their agenda. Before and during the day-long conference, about 250 delegates mingled over refreshments among exhibits in the small adjoining Cambridge Room. [custom_adv] As well as transport minister Lady Vere and senior civil servants, delegates came from across the UK, including from Transport Scotland, Transport for London, major bus and rail operators, manufacturers, councils and thinktanks. [custom_adv] A sizeable delegation came from Lagos and there were representatives from Heathrow airport and MacMillan Cancer Support, whose service users are most at risk from the virus.