Turns out there was a pamdemic exercise in 2016
The NHS was found to be lacking surge capacity
The Conservative Government didn't release the report because it would alarm the public.
Did they act on it?
Exercise Cygnus
Our preparations for pandemic influenza were exercised in October 2016 with NHS England participating in Exercise Cygnus. The exercise was set seven weeks into a severe pandemic outbreak and challenged the NHS to review its response to an overwhelmed service with reduced staff availability. Plans are currently being revised to incorporate the learning from this exercise and ensure our continued preparedness for future pandemic influenza outbreaks. We are also continuing the challenging work around the management of surge and escalation decision makingprocesses
The report is in the Telegraph
Ministers were told that hospitals would rapidly run out of intensive care beds, mortuaries would be overwhelmed and doctors would be forced to deny frail patients critical care.
A classified report on Cygnus’s findings - which has never been made public - highlighted problems delivering protective equipment such as masks and gowns to health workers, an issue which has been frequently raised by medics battling Covid-19.
It suggested that health bosses would have no choice but to “switch off” large parts of the NHS.
www.mirror.co.uk/news/politics/coronavirus-uk-warned-3-years-21773821
www.england.nhs.uk/wp-content/uploads/2017/03/board-paper-300317-item-10.pdf