The short, titled "Red Nose Day Actually," will see stars including Hugh Grant, Colin Firth, Keira Knightley, Liam Neeson and Bill Nighy reprise the characters they played in the Working Title hit, released in most markets by Universal, which grossed nearly USD 250 million worldwide, reported Variety.
"Over the years I've enjoyed doing 'Red Nose Day' specials of TV things I've worked on," said Curtis, who co-founded Comic Relief in 1985 alongside comedian and actor Lenny Henry.
The short film, currently in production, will screen as part of Comic Relief's "Red Nose Day 2017" charity telethon on March 24 on BBC One.
The film explores what "Love Actually's" characters are up to in 2017.
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Also returning to their original roles are Martine McCutcheon, Andrew Lincoln, Lucia Moniz, Thomas Brodie-Sangster, Olivia Olson, Marcus Brigstocke, and Rowan Atkinson.
Notable absentees include Emma Thompson, Martin Freeman and Chiwetel Ejiofor. The original film also co-starred the late Alan Rickman, who died in January 2016.
"We've been delighted and grateful that so many of the cast are around and able to take par,t and it'll certainly be a nostalgic moment getting back together and recreating their characters 14 years later."
The UK premiere of "Love Actually" in November 2003 was held in aid of Comic Relief.