We had a guy visit my ex-local photography club who would probably be able point you in the right direction, if not supply one or two to you... I shall have to delve a bit deeper to find his name and phone number, shall PM it you once I've located it.
He breeds reptiles, spiders, snails, toads, virtually anything that gives most people the heebie-jeebies.
I do remember him saying that you should never release such things into the wild for they grow a collosal size (probably up to 15 to 20 times the size of our common garden snail) and have an appetite to match! He said that if a strong-hold colony were to start in this country, they would soon wipe out most plants in the area, luckily though, they're not particularly keen on our climate, which is a blessing in disguise!
Some of the 'critters' he brought along were absolutely fascinating, especially the Chilean Rose Tarantula (pic below).
As much as spiders really do freak me out, this specimen had endearing qualities, if you get what I mean.
Just remembered his name (not the spider's), Dave Duckett, just need to find his phone number!
Ian G