Since the pandemic struck, St John volunteers have been working tirelessly in hospitals, as emergency ambulance crews, in vital community projects, and as vaccination volunteers in more than 200 locations.
But you never know who you might meet when you go for your vaccination. Who is behind the mask? We have had a number of celebrities volunteering with St John Ambulance in support of the NHS COVID-19 vaccination programme. Some are administering the vaccine while others have undertaken support roles, reassuring people ahead of their jabs and caring for them afterwards.
Here is what some of them have had to say about their experience.