Gavin and Stacey star Ruth Jones has delighted fans by making a return as her character Nessa.
Jones, who co-created the comedy with James Corden, has shared an "important public message".
Guess who turned up! Please feel free to share if you think it helps xx pic.twitter.com/7Rqo4EXd25
— David Peet (@DavidPeet1729) April 25, 2020
The video opens with Nessa's iconic line: "Oh. What's occurrin'?"
She then urges people not to break the 2-metre rule.
Jones added: "At the end of the day when all is said and done, no word of a lie, if truth be told, just because you don't feel ill doesn't mean you're not infectious".
"You could be riddled. Stay safe, stay out of my way. Oh and protect the NHS obviously, it goes without saying."
The video was posted online by her husband, executive producer David Peet, and was retweeted by James Corden.
Corden and Jones recently reunited with the rest of the Gavin and Stacey cast in 2019 for a one-off Christmas special.