You have to obtain the Criminal Records Bureau Enhanced Disclosure before joining the Register of Public Service Interpreters according to the thread above. The initiator of the posting had some apparently insoluble problem in that. I hope he has found the solution in the meantime.
Jo Curtis wrote:
I wondered whether anyone has any comments on joining the Register of Public Service Interpreters, or the Metropolitan Police's own register. I'm a qualified interpreter (MA), but lacking experience. Is it necessary to follow a course to prepare for the exam? Any comments on the different courses available?