There's a chance this is a marketing gimmick by the movie "Tag". A woman flew to Scotland so she could tag a guy. The video takes place at a christening and his family is in on it.
They let the woman pretend to be a gardener, and when he asks her to move so they can take a family photo . . . she tags him. According to their game she had to tag and leave immediately, so she flew back to the U.S. right afterwards.
(The "Tag" movie came out in the U.S. a couple of weekends ago, but it won't be in U.K. theaters until June 29th.)