The bride's gown was a long-sleeved, ivory-lace wedding dress topped off with a crown of white flowers and a cathedral veil. She was given away by her father Sebastian, who was dressed in a traditional Scottish kilt.
Harington wore pinstriped pants instead of a kilt, along with a black jacket, cream vest, white shirt, and a black tie.
The actors, both 31, were showered with flower-petal confetti after the ceremony before hopping into an antique Land Rover decorated with paper hearts, and with old-school tin cans tied to the back.
Guests included Peter Dinklage, Maisie Williams, Sophie Turner, Emilia Clarke (all of "Game of Thrones") and Jack Donnelly & Malin Akerman.