Gavin & Stacey star Mathew Horne confirmed he has secretly fathered a son with wife Celina Bassili during a performance in London this weekend.
The actor will reprise his most famous role in an upcoming film Christmas special, would have welcomed the child shortly after their wedding in September 2021 with set designer Bassili.
In photos obtained by The sunHorne, 45, pushes an empty buggy while his wife cradles the child as they make the most of the weather over the holiday weekend.
Good friends, including Gavin & Stacey co-stars James Corden and Joanna Page are said to have known about the birth – which was not made public by the couple at the time.
A source told The Sun: 'Mathew is a brilliant dad and he and Celina are loving being parents.
Gavin & Stacey star Mathew Horne confirmed he has secretly fathered a son with wife Celina Bassili during an appearance in London this weekend (pictured here on May 7)
The actor is said to have welcomed the child shortly after their wedding in September 2021 with set designer Bassili (photo)
'Celina's brother has a son the same age and they enjoyed spending time together.
'Mathew also kept the news quiet because he prefers to live his life out of the spotlight, even though he's a household name thanks to Gavin & Stacey.
“All of his Gavin and Stacey co-stars know he's a dad, including James Corden and Joanna Page.
“They all have children, so you can imagine that the conversations on set for the Christmas special will be a lot about their children.”
Horne traveled to Bassili's native Norway in 2021 for their wedding ceremony, with the couple tying the knot on the 15-acre grounds of a 1930s mansion.
The actor was first spotted kissing the set designer two years earlier during a night out in Wales while they were filming Gavin & Stacey's latest Christmas special.
Bassili, who graduated from the University of Arts London with a first class degree in set design, lists the Gavin & Stacey special on her online CV.
With the kiss he seemed to confirm that his relationship was over with Casualty actress Evelyn Hoskins, whom he proposed to in October.
A spokesperson later told MailOnline: 'Mathew and Evelyn split amicably in October 2018.'
Mathew was first spotted kissing set designer Celina at a Burger King in 2019, confirming the end of his nine-month engagement to actress Evelyn Hoskins (pictured)
James Corden and Ruth Jones have written the very last episode of Gavin And Stacey, which airs on Christmas Day
The BBC will reportedly treat Gavin & Stacey fans to a double helping of the show this Christmas
In addition to the grand final, BBC bosses have commissioned a special behind-the-scenes documentary looking at the programme's 17-year history
The BBC will reportedly treat Gavin & Stacey fans to a double helping of the show this Christmas.
Earlier this month, sitcom stars Corden, 45, and Ruth Jones, 57, announced they would return for one final episode.
And to complement the grand finale, BBC bosses have commissioned a special behind-the-scenes documentary looking at the programme's 17-year history.
Cameras follow the cast, including titular stars Horne and Page, as they film scenes for the final installment ever.
A TV insider told The Sun: 'The Beeb sees this as a momentous occasion and wanted to give Gavin and Stacey a suitably auspicious send-off.
'The fact that the documentary will be made by Fulwell 73, which is co-owned by James and co-produces the sitcom, means they will get full access to the set and the biggest chats.
“It will likely be made in conjunction with the show itself, with the creative process of delivering the finale being filmed from the first day to the last.”
MailOnline has contacted a representative for further comment.
The critically acclaimed series follows the lives of the two titular characters Gavin from Essex and Stacey from South Wales, documenting key points in their long-distance relationship and events that bring the two families together.