A number of the questions in this puzzle relate to the marriage today between John "Paul" Halpern and Taline in Saint Sarkis Armenian Church followed by a reception in Richmond Park.
The puzzle is set by three of the Biggles team - John "Araucaria" Graham, John "Enigmatist" Henderson and John "Shed" Young. John Halpern is usually the fourth member of the team.
The Biggles books were written by WE Johns ("We Johns").