Medic_01,
Yes, as Phil_H noted, Tamiya's British stretcher bearer team is out there--available occasionally at online hobby stores and more often of course on eBay! It was produced with Tamiya's British Ambulance Rover 7 (kit #35082) and also separately. The kit is fairly good (Tamiya 1980's quality--figures' faces are a little chunky, poses are a little stiff, and they demonstrate TERRIBLE lifting/carrying technique with bent backs), but with some modifications can be made into a decent stretcher team. I converted mine to American Medic, Amublance driver and Surgeon in WWII, unloading a casualty from a Dodge WC-54 Ambulance (Italeri kit)--I'm planning a Battalion Aid Station diorama, but have taken a little rest from that right now. Here's some pics:
Heller also made a 1/35 scale Multi-pose French stretcher bearer kit (#134) years ago, that you can usually find on eBay. I've been told the uniforms are Korean War era, but as with anything in modeling, that can be changed with some putty or other tricks! Here's one now that is in my opinion way over-priced (but I'm a builder, not a collector! ): http://cgi.ebay.com/Heller-1%2F35-Rare-Multipose-French-Stretcher-Bearer-unit_W0QQitemZ360085391775QQcmdZViewItem.
Anywho, hope this helps!