The mega-expensive musical Lord of the Rings has not exactly been a hit with critics. But Andrew Lloyd Webber — “the undisputed king of mega-musicals as well as one of the wealthiest men in the world — made a 24-hour flying visit to Toronto last weekend just to catch the show. The upshot: Insiders say LOTR’s next gig is likely to be at London’s Theatre Royal Drury Lane, owned by Lloyd Webber’s Really Useful Group.”