The Scottish singer-songwriter performed for the newly married couple and their guests at the event, which was held on Saturday June 18.
After the first dance, the Someone You Loved singer took to the stage, dressed in his signature white t-shirt and black trousers.
As well as posting pictures of him and his new bride, he shared a snap of Capaldi pointing to the crowd of smiling guests.
In another photo, the singer is seen posing with Henderson, who is wearing a smart tux, and his bride, dressed in an off-the-shoulder white gown.
While Henderson is currently on his honeymoon, he is set to join Nottingham Forest on loan from his current club.