It started off as an online post and now has lead to artists giving away free portraits to front-line workers around the world.

Artist Tom Croft offered to paint a key worker's portrait in a post on Instagram. Having completed his painting of A&E nurse Harriet Durkin, he has now introduced 500 artists to their subjects, who work on the front line in the fight against coronavirus.

Watch more personal stories during the coronavirus outbreak: Your Coronavirus Stories

Reporting: Will Gompertz

Editing: Alex Stanger