The ceremony was at the five-star St. David's Hotel and Spa in Cardiff, Wales, The Daily Mail reported Thursday. The private ceremony was attended by 40 close friends and family members said the hotel's marketing manager, Susan Anderson.
"It was a lovely ceremony, it went very well," she told the newspaper. "It was private event and attended by family and friends only -- the couple seemed very happy."
Barrowman also previously told the BBC, "Our relationship was legitimate for us a long time ago."
"We have been spending most of our time together. The ceremony is because we have the right to be recognized as a couple," he said. "It forces people who don't want to recognize same-sex relationships as legitimate, it forces them to do so."