
The Kennel Club does not have a stud dog register
You get a stud book number by successfully showing him at championship shows & winning a Challenge Certificate, reserve Challenge Certificate, 1st, 2nd. or 3rd in the Limit or Open Classes or gain a Junior Warrant with your dog which is not easy in Cavaliers
Plus he will need to be heart & eye tested clear each year
Then you will have to wait for people to like him & his breeding so much that they want to use him on their heart & eye tested clear bitches.
Also the bloodlines need to be checked for Syringomyelia sufferers or carriers.