Gareth
I think you must be talking about the small plastic folder (about 6"x4") containing 8 laminated cards as follows:
1. Deer Disease Identification
2. Tape Worm
3. Tick-borne and other diseases
4. Deer warble fly larvae
5. Tuberculosis
6. Liver fluke
7. Lung worm
8. Nasal bot fly larvae
The green plastic folder has the BDS logo and, in my version, on the back of the cards it says that they are "A British Deer Society Education and Training Publication", but I think you'll find it's now published by the Deer Study & Resource Centre:
http://www.deerstudy.com/mall/productpage.cfm/DeerStudy/DM7/65122
With the availability of the Best Practice Guides I'd think you could make up your own pretty easily.
willie_gunn