Avoid it like the plague. It’s a sophomoric gross-out with locations in nine cities that sops up overflow from the London Eye. Costumed actors bray at you as you’re led through darkness from set to set, each representing a period of English history as a 13-year-old boy might define them. Plague-ridden rubber corpses “sneeze” on passersby, a whore exposes one of Jack the Ripper’s mutilated victims, and Sweeney Todd commands you to sit in his chair. The climax is a pair of indoor carnival rides. If you dread being picked on by bad stand-up comics, you’re going to hate this place. Booking ahead may not save you having to queue. If you can’t resist, at least bundle it with a ticket on the London Eye for a discount.