He is starring in the new Marvel blockbuster, Eternals, as the Black Knight.
And after attending the premiere, Kit Harington was joined by his wife Rose Leslie at the star-studded afterparty held at Maison Estelle in Mayfair on Tuesday.
The Vigil actress, 34, was sporting a new look at the party, as she swapped her usual red locks for a brunette colour during the appearance.
Stepping out: Kit Harington was joined by his wife Rose Leslie at the star-studded afterparty held at Maison Estelle in Mayfair on Tuesday
Rose cut a stylish figure in a black faux fur jacket with a yellow trim, teamed with a pair of flared trousers and white trainers.
The Game Of Thrones star was carrying a funky clutch and sported a series of statement rings.
Meanwhile, Kit, 34, looked seriously dapper in a black double-breasted pinstripe jacket, which he teamed with a pair of trousers and dress shoes.
Real life couple: Rose and Kit married in 2018 after meeting on the set of Game Of Thrones, where they played unlikely lovers Ygritte and Jon Snow
Rose and Kit married in 2018 after meeting on the set of Game Of Thrones, where they played unlikely lovers Ygritte and Jon Snow.
The couple welcomed their first child together - whose name is unknown - at the beggining of this year, after announcing their pregnancy in September.
They appeared to be having a night away from parenting duties however on Wednesday, as they attended the event without their little one.
Parents: The couple welcomed their first child together - whose name is unknown - at the beggining of this year, after announcing their pregnancy in September
Suave: Kit wore his hair swept back and sported a face of stubble
Earlier in the evening, Kit joined his GoT co-star - who is has reunited with for the Marvel film - on the red carpet at the screening.
Richard looked dapper as he arrived at at the BFI IMAX Waterloo, wearing a smart black suit with matching tie as he walked the red carpet at the event.
But while Kit's Snow featured in all six seasons, Madden's Stark was famously killed off during its bloodiest episode, dubbed The Red Wedding by fans because of its graphic brutality.
All-stars: Earlier in the evening, Kit joined his GoT co-star - who is has reunited with for the Marvel film - on the red carpet at the screening.
Richard stars in the film as character Ikaris, a member of the Eternals, while Kit plays human Dane Whitman.
The film sees the Eternals, an immortal alien race, come out of hiding for thousands of years to protect Earth from their evil counterparts, the Deviants.
Eternals, which premiered in Los Angeles earlier this month, stars Angelina Jolie, 46, as elite warrior Thena and Gemma Chan, 38, as the character Sersi.
Strike a pose: Richard wore a smart black suit with matching tie as he walked the red carpet at the event
Top cast: Richard stars in the film as character Ikaris, a member of the Eternals, which first premiered in Los Angeles earlier this month
The cast includes MCU's first deaf superhero (Lauren Ridloff as Makkari) and its first openly gay superhero (Brian Tyree Henry as Phastos) who shares the franchise's first onscreen same-sex kiss with Haaz Sleiman, who plays his husband.
In ELLE's 2021 Women In Hollywood issue, Angelina - who is an advocate for refugees - discusses her upcoming movie and praises The Eternals' director, Oscar-winner Chloé Zhao for her choice of casting.
'A lot of times as an actress, you're that individual strong woman, or you have one sister; you don't often have this family where you really get to know women and see all the different strengths,' she explained.
Looking good: Kit looked dashing in his attired, wearing a black shirt which he left open at the collar for the night
Dashing: The star smiled as he arrived on the red carpet in his smartly pressed pin-striped suit and matching black shirt
Critiqued: The superhero flick was lambasted by critics over its 'miserably undernourished' script, deluge of underdeveloped characters and 'overloaded' storyline
Praising her co-stars, she continued: 'Gemma's grace and elegance and the way she walks through the world. Salma's motherhood and power, and Lauren's connection and intelligence. Everybody came as themselves.
'Maybe there's something to that, that the characters weren't as far off [from ourselves]. I think there's a secret that we don't know that our director knows, because if you look at her films, she casts a lot of real people as their roles and it shapes her films.'
She reveals in the issue that when she was first contacted about the movie, she thought it was going to play a 'grandmother' type role.
Oh dear: Ahead of its release Eternals was branded 'disappointing' and 'ultimately unmemorable' by critics in first reviews of the hotly anticipated MCU blockbuster (above Angelina Jolie as Thena in the film)
'I never thought I was going to be one of the Eternals. It doesn't happen. It's never happened to me like that before without a fight and like, 'I can do this, please hire me!' When she told me I was one of them, I was like, ''Me, Mexican, Middle Eastern? Me, in my fifties? I'm going to be a superhero in a Marvel movie?'' Sometimes as a woman, as a woman of colour and with the age, you feel so overlooked,' she said.
Commending Zao for 'having balls', she championed the director for 'acknowledging' her within the industry.
Ridloff, whose character Makkari is deaf like her and the first deaf superhero within the Marvel universe, reveals she jumped at the chance to 'show representation' on screen in a 'refreshing' way, while Chan praises Marvel for showing diversity on a global scale with its movies.
Ahead of its release, Eternals has already been branded 'disappointing' and 'ultimately unmemorable' by critics in its first reviews.
Not good: The film was lambasted by critics over its 'miserably undernourished' script, deluge of underdeveloped characters