Kennel Club Online Services
Go there.
Defra, UK
Also go here...unlike American England has very strict breeding laws-sorry I couldn't provide a better site my browser is blocking half the actualy government sites in England...I can Pm you some contact information for a couple Yorkie breeders over there most don't recommend breeding (despite 1 year being the law there) until a female is 3 at least usually almost 4 years old...let alone even a hobby breeder needs a license there...I tried to show that specific but can't get on the government site.