You might try e-mailing, or calling, Patrick at BCB Survival USA. He's been helpful to me in past.

They are BCB's relatively new "offical US distributor" and are pretty much up and running. Website http://bcbsurvivalusa.com/ says, "If you have a special request, please let us know." Don't know their ability to "order on demand" from BCB UK, but won't hurt to try.
_________________________
"Things that have never happened before happen all the time." — Scott Sagan, The Limits of Safety