Originally Posted by SavannahKitten

TICA stands for The International Cat Association and is based in the USA, but as the name suggests is a worldwide cat fancy and registry service.
GCCF is the Governing Council of the Cat Fancy and it's UK only.

It is always best to be dual registered if you are going to show your cats - and as a breeder that's the best way to get your name known.

However GCCF do not accept all Bengals as proper Bengals. It will be years and years (if ever) that they approve the blue Bengal. They are only just this year allowing snow spotted and brown marbled Bengals to have championship status. The snow marbled Bengal and silver Bengal will just have to wait.
They take a long time to approve prefixes - however they have the most shows. TICA shows are only just taking off over here so there are few of them about and you may have to travel a long way to attend.