"Dyson DC18, DC15, DC24 and DC25's all had foot pedals to release the machines!"
Sorry, I forgot all about that when I wrote what I did. Yes, you are quite right, they do. But I know -based on what I read- that Mr D was against the idea originally. It's funny, because whilst he doesn't like gimmicks in one form, he thrives on them in another. For instance, the new turbo head which can be switch off and on via an air-release in the handle. A foot switch would have done the job, but that wouldn't require much R&D. Goodness knows I could design that here & now.