Emma and Matt Willis have trained up as vaccine volunteers.
The TV presenter, 45, and the Busted star are working with St John Ambulance to help as many people as possible get their coronavirus vaccine.
They join other celebrities including TV doctor Dr Ranj Singh, TV vet Dr James Greenwood and The Only Way Is Essex star Bobby Norris in the fight to get the UK vaccinated against Covid-19.
Matt, 37, has also completed his first shift as a volunteer patient advocate.
Since the pandemic began, St John volunteers have been working in hospitals, as emergency ambulance crews, in vital community projects, and as vaccination volunteers in more than 200 locations.
Emma, who previously trained on a maternity ward for her reality TV series Emma Willis: Delivering Babies, said she wanted to volunteer because she felt "useless" over the past year.
She said: "We wanted to help in some way and give something back.
"If we can be a tiny part of helping the vaccination process along its way and be an extra pair of hands when hands are needed, then I'll feel like we've done something to contribute."
Matt added: "I remember St John from backstage at venues and festivals.
"At the front there was either a paramedic or someone from St John stood in front of us.
"I'd recognise those jackets anywhere and it's a good feeling!
"Many of us have a lot of time on our hands right now and I want to be able to look back in 10/20 years and say I used that time wisely.
"We did our little bit and we helped in some way."
Adventurer Sir David Hempleman-Adams and Olympian Dr Anna Watkins are also among the celebrities volunteering with St John Ambulance.
