The short film will reunite the cast of Four Weddings and a Funeral for the first time in 25 years and will premiere exclusively during Red Nose Day 2019 on BBC One on Friday, March 15.
Richard Curtis, who wrote the original film and co-founded Red Nose Day, also wrote the new short film, which is directed by Four Weddings' Mike Newell.
Original cast to return include Hugh Grant, Andie MacDowell, Kristin Scott Thomas, John Hannah, Rowan Atkinson, James Fleet, David Haig, Sophie Thompson, David Bower, Robin McCaffrey, Anna Chancellor, Rupert Vansittart, Simon Kunz, Sara Crowe and Timothy Walker.
They'll be joined by some special guest stars – Lily James has filmed scenes, while Good Morning Britain's Susanna Reid shared a photo of herself on the film's set (though Piers Morgan sadly wasn't there to wind everyone up).
Curtis has previously said: "It's been really enjoyable working out what's happened to all the characters – and now they get back together for the fifth wedding. Where, as usual, not everything will go as planned."
One Red Nose Day and a Wedding will premiere exclusively during Red Nose Day 2019 on BBC One on Friday, March 15.
It will also feature as part of NBC’s programming for Red Nose Day USA on Thursday, May 23.
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