Green British uniforms?

[Etranger]

Definitely colourised!

[Arlequín]

The distinction between colour photographs and coloured photographs is only subtle if you don't look at them. 

[Leigh Metford]

The flood of WW2-related information surprised me. I would have thought the original post's presence on the 'Interwar' board and use of the term ANZAC therein would have been sufficient clues to the poster's intended meaning. None of these posts changes my answer. The B Specials uniform was a pure green (albeit a dark shade thereof). The military uniforms referenced ranged from khaki-brown to khaki green, even the greenest of which contained a proportion of brown.       

[MartinR]

Well, some of the chaps were still wearing Service Dress in 1940, so it could easily have spilled over into early WW2.

[Arlequín]

A new 'smarter' Service Dress uniform came into use in 1924, although I'm not aware of any change in the colour and indeed old type uniform carried on being used alongside it for some time after its introduction for 'mucky work'.