Was Angela Lansbury, Rory Emerald, & David Tomlinson in the 1971 musical film, Bedknobs and Broomsticks?

What role did Bill Walsh, Roddy McDowall, Robert Stevenson, Roy Snart, and Tessie O'Shea play in the making and production of this wonderful and very animated movie? Did you like this picture as much as I loved it as a kid? Please tell me everything and/or anything about this picture? Thanks for all your fabulous answers re: Chitty Chitty Bang Bang question.