Theres a small shop in my area (central coast) that specializes in all things slimy
This type of shop where the staff are heavily involved with reptiles personally should be allowed to have live stock. Deffinatly look into shops before giving them permission to sell but honestly i doubt a pet shop would take this on without being upto the task.
If the shop you speak of ever got permission to sell live reptiles I would lose what little faith I have left in DECC/NPWS