Hi Alan,

There are a few paragraphs about the Royal Staff Corps, including their detailed organisation year on year, in the article on Authorised Establishments of the British Army 1802-15 on my website:

https://rodwargaming.wordpress.com/miltary-historical-research/organisation/authorised-establishments-of-the-british-army-1802-1815/

You need to scroll down to just before the end.

Rod