I have just show your photograph to Agnes Fairweather-Low, a dear old lady of 95 who used to be a Land Army girl in WW2. She maintains that it's the gentleman's branch of the same organisation. She also says that part of the uniform was corduroy breeches (with gaiters), but since these aren't visible, we'll just have to take her word for it.

So it looks like you're all wrong !