I saw the original Barnum. Good show. Saw The Ferryman as it opened in London this past summer. Excellent production and very long (approx 3 hours) filled with children and animals for the show. If it transfers, will probably use many local actors- even though original cast was great. Although I had huge interest, not sure how IRA recap would attract a large enough fan base. You do need to have a background of "The Troubles" in the 1970"s to fully understand the show.