It could be sheltie the reason I ask is my Mum is a nurse and a lady which she cares for has asked her if she could find out some information on finding her a shelby puppy but we may have misheard her, the breed is apparently like a minature collie does this ring any bells with anyone?

Yes, that's a Sheltie - short for Shetland Sheepdog. Have you had a look here for breeders?