We are debating when to take our vacation to London, and beyond, next year. The choices are the last week of March and first week of April, or two weeks during the summer, probably August. It appears the airline tickets would be cheaper in the Spring, and I'm guessing hotels might be cheaper too. Also, I'm guessing museums will be less crowded, etc. (Correct me if I'm wrong here). Since my wife and mother-in-law are gardeners, they really want to tour as many English gardens as they can. Will late March/early April be too early for that purpose? Would there be any other down sides to going in the Spring?