Hi, and a big warm welcome to you. Lucky you, living up in beautiful Scotland! we lived there 6 yrs ago and i would go back in a heartbeat! I still miss it.
As someone else said...Yorkie's are Yorkie's...people tend to assume that you have the Toys, Miniatures and standard sizes like you would with the Poodle...but thats not the case. Breed standard according to the kennel club is 4-7lbs...some are under (like my little girl) and some are over. People will always ask me if Pixie is a 'Toy' Yorkie..I do try to explain that there is no size catagory with the Yorkie and politely say, 'yeah, she's a little one'.
