UK law

Good afternoon,

I hope to send this message in the right section.

I need some information about UK law for martial arts.
I know that some years ago martial arts were controlled by UK Government, and because of this not all styles were admitted into UK areas. Am I right?

If yes, is still true? Are some martial arts not allowed there? And how is it possible to know the criteria for this choice?

Thank you very much for any information.

Regards,

Kentai.