Retired doctors and nurses have been speaking of how their determination to help the NHS fight the coronavirus has prompted them to resume their careers.
Dr Joanna Pepke-Zaba came to Cambridge on a scholarship from Poland in the 1980s and has served the city ever since - treating patients at the Royal Papworth Hospital and carrying out research at the University of Cambridge.
Aged 66, she was due to retire next week and embark on the trip of a lifetime with her husband.
Instead, she's decided to head straight back to the wards - caring for other vulnerable patients while her colleagues treat those with coronavirus.
"We have to remember there are other patients and healthy people who become ill. Those patients need attention as well. It's clear we can't give them as much attention as in normal times but we should do as much as we can." >
Claire Roberts has just resumed her nursing career at the age of 64.
She's come out of retirement after just two years - one of around 70 former staff at the Queen Elizabeth Hospital in King's Lynn who've answered the call for help.
"This is the job of the moment," she said.
"We have to show that we are able to meet the challenge and to get to the other side because everyone is depending on us."
"We are scared but we know we've got a job to do." >
It comes as the East of England Ambulance Service launches a recruitment drive for a thousand temporary workers and volunteers.
It is currently holding fast-track training courses for new control room workers at Hellesdon High School near Norwich.
Meanwhile, 750,000 people have signed up to be NHS Volunteer Responders - and they are due to start this week.
And then there are those like Andy, from Essex, who's one of 750 thousand NHS Volunteer Responders starting work this week.