From The Guardian on line just now:
Once operational, Nightingale will be staffed by NHS specialists working around the clock with the support of hundreds of volunteers from the St John Ambulance Service – and, after they have been trained, cabin crew from Easyjet and Virgin Atlantic, who are otherwise out of work.
Richard Lee, the chief operating officer at St John Ambulance, said the numbers of his charity’s volunteers at the site would eventually reach 500 in around three weeks, split into two 12-hour shifts. “Our people have needed little encouragement to step up,” Lee said.