Hiya BB - you may be interested in having a look at this:
TICA
which is a global registering body whose acronym, spelt out fully is The International Cat Association - an example of a cat club in the UK which comes under the umbrella of TICA, is
CatTica
Alternatively, have a look at the
GCCF or Governing Council of the Cat Fancy in the UK.
You can find out more about registration from other sites too but these two are the first that sprang immediately to mind - hope this will do as a starter.
All the best in your plans - hope things work out nicely for you.
Kind regards