Harington, 32, wore a black jacket with navy blue scarf while Leslie, 32, bundled up in a multi-colored coat for the event.
The outing marked the first time the couple has been photographed together in almost six months.
Earlier this year, Harington’s rep confirmed to PEOPLE that ahead of the series finale ofGame of Thrones, the actor decided to “utilize this break in his schedule as an opportunity to spend some time at a wellness retreat to work on some personal issues.”
A source previously PEOPLE that Harington struggled with his status as an A-list star after shooting to fame on the beloved fantasy series.
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“For 10 years, Kit was almost interchangeable with Jon Snow, and fully inhabited this intense character,” the source said. “The role and especially the level of fame he was thrust into was a lot for someone so young and just out of drama school.”
A second source told PEOPLE that Harington had“the right attitude on self-improvement”as he sought help.
RELATED VIDEO:Game of ThronesStar Kit Harington Checks Into ‘Wellness’ Facility to ‘Work on Some Personal Issues’
“There is no stigma in going to rehab, and he will come out in much better shape,” the source said. “With the proper help, he [will] stay in good mental condition, and can get a grip on what’s next.”
Harington wasspotted out and about in North Londonin June. Later that month, a source told PEOPLE theDeath and Life of John F. Donovanstar had beenspending quality time with Lesliefollowing his treatment.
“The two are enjoying the summer, spending time with family and friends,” said the source. “Kit seems well. And Rose seems happy that he is back in London. While he was in Connecticut, she waslaying low. It seemed their focus was just getting Kit feeling better. And he does look better. Kit and Rose seem happy.”
The source noted that the couple, who have been married for more than a year, “were together in England for theirwedding anniversary” on June 23. The duo famously portrayed star-crossed lovers on the Emmy-winning HBO series.
Rose Leslie and Kit Harington.Dimitrios Kambouris/Getty Images

In September, Harington attended the 2019Emmy Awardsalone while Lesliewas absent from the ceremonydue to prior work commitments.
On Monday, Harington found out he was nominated for a Golden Globe for best actor in a television series, drama — the only nominationGame of Thronesreceived for its eighth and final season. The Golden Globes nod comes after Harington wasnominatedin the same category at the Emmys in September.
source: people.com