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While he hinted he didn't know any solid details about what was to come, the actor - who plays the hilarious Uncle Bryn on the BBC show - said he expected James Corden and Ruth Jones to pick the show up again, seeing as they'd left fans "hanging".
The 2019 Christmas special ended with a huge cliffhanger, as Nessa (Jones) proposed to Smithy (Corden).
Speaking during his podcast, podcast, 'Brydon &', the actor told guest Sheridan Smith: "I think they might do one more special because they left it hanging, didn't they, with the proposal?
"So it would seem strange if they didn't. But they should crack on if they are going to do it."
Sheridan - who has appeared as Ruth 'Rudi' Smith in the comedy show - replied: "They created this masterpiece sort of one-off Christmas special. Now everyone's asking for more, aren't they?
"What a cast and everyone was so lovely; the crew, everyone, was brilliant on that job. They wrote it so well and so to just be a small part of it was an honour."
While there has been no official confirmation of another special, James Corden has previously said he "hopes so much" that the sitcom will return, while speaking to Metro.co.uk.
Given that he's the creator, we think that's a pretty good sign...
The the Late Late Show host added, though, that if the show did make a comeback for another special, it "will really be the last, final part". Sob.
Gavin and Stacey ran from 2007 until 2010. And 2019's festive edition of the sitcom broke records, being the BBC's most-viewed non-sporting event in over a decade and the most-watched comedy programme in 17 years, after drawing a staggering 18.49 million on Christmas Day.
Let's hope James and Ruth eventually give us what we want!
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