LONDON — They came from Arizona, Australia, Brighton, Seattle and Nottingham, among other places. They came because they love the royal family, because they love to eat cake and, in one case, because they had free tickets.

English literature is full of tales of disparate people thrown together for unexpected reasons. But Wednesday afternoon’s gathering was hardly “And Then There Were None.” Rather, it was a 90-minute royal-wedding-and-high-tea-themed bus tour that ended up attracting a full gamut of royalists, anti-royalists and don’t-care-ists who were not always altogether sure what they were doing there.

“The bus tour idea was just a different way of having afternoon tea, while going someplace,” said Sally Saunders, a high school teacher from Wollongong, Australia, who was starting on her first course, featuring mini-shepherd’s pies, cucumber sandwiches and sausage rolls. “The whole point is to drive around London and eat some nice food. As for the royals — whatever.”