Game of Thrones actors Kit Harington, Rose Leslie welcome baby boy

Kit Harington and his wife Rose Leslie have officially welcomed a baby boy.

The couple, who met on set of Game of Thrones almost a decade ago and were married in 2018, confirmed the news via Harington's representative, who told E! the pair were "very, very happy".

Harington and Leslie, both 34, were photographed with their new bundle of joy in London on Tuesday.

The pictures, obtained by Page Six, show the couple holding hands as Leslie held their son in a baby carrier.

It is not yet known what the baby's name is or when he was born.

Actress Rose Leslie, who played Ygritte in Game of Thrones, has given birth to a baby boy with co-star Kit Harrington, Jon Snow in the popular show. Photo / supplied

Leslie, who played Ygritte on the HBO series, announced in September that she and Harington (AKA Jon Snow), were expecting their first child in a cover story for the UK's Make Magazine.

She told the publication she was enjoying spending quality time with her husband in their Tudor manor in East Anglia amid the pandemic.

View this post on Instagram

A post shared by Ursula Lake (@ursula_lake)

"It's incredibly old. We have a thatched roof, which currently has an enormous hornet's nest in it. I do love to think about the house and all the people who have lived there," she said.

"Were they happy, how did they live? All the families passing under those ancient beams.

"What a glorious thing to be able to run to the countryside and recoup. It's a great privilege to be surrounded by greenery, birdsong and hedgerows, and our delightful neighbours. It's so peaceful."

Their co-star Sophie Turner, who played Sansa Stark for all eight seasons, also welcomed her first child, daughter Willa, with husband Joe Jonas in July.