At the end of five years little had been achieved, as the Kennel Club considered that the dogs were not sufficiently numerous or standardised to merit a separate breed registration. In 1928 a club was founded, and the title "Cavalier King Charles Spaniel" was chosen. At the first meeting, held the second day of Cruft’s Dog Show, 1928, the
On 5 October 2008, Margaret Carter, who revealed the health condition of the Best-of-Breed Cavalier in the film, was voted out of the Cavalier King Charles Spaniel Club (CKCSC) committee by its members in a Special General Meeting for "breach of confidentiality". The Kennel Club has expressed concerns with the decision by CKCSC.
The Kennel Club Heart Scheme assesses Cavalier King Charles Spaniels for mitral valve disease and other potentially significant heart diseases. The scheme advises owners if their dog is affected by heart disease and gives guidance to breeders on how to lower the risk of producing affected puppies. A number of approved cardiologists (vets