I am seeking a Miniature Yorkshire Terrier puppy and live in the North London area. Are there any breeders within driving distance?

There is a thread on the "searching" board. Yorkshire Terriers don't come in miniature - they're all much the same size.

yes they do

Oh! Can you give more info? Thought there was only one type.

look here

There's only one official standard for Yorkies - there are people who breed them undersized though. The tiny ones I've come across unfortunately tend not to be healthy.

thought there was a t.cup size as well as toy JG, quote me if i'm wrong :)

Not according to the Breed Standard.
As I said, I know a couple of teeny-tinies - and they spend a lot of time at the vet!

Oh think i best be quiet then lol

Ooooh don't get me started on the teacup business especially not with poodles lol :D

Jesse