British Intelligence....that's an oxymoron
I'm sure that there will be some rogues here that can help you with your question.
If you don't get your question answered here, you can hit our sister site, WW2Talk, there are some knowledgeable persons there, also, especially where the British Army is concerned.
Again, Welcome.
Oh yeah, when you get your kit together, please post us some pics, or you can show what you have already.