https://www.slab.org.uk/faqs/5826/
If you intend to carry out any form of legal aid work:
This allows us to accept your legal aid applications and pay for that work.
You can start this process either by a telephone call or in writing. We will need basic details such as
You can, if you wish, be linked to all branches within a firm but you must specify a default branch (usually the head office).
We will enter your name on FAMS, allocate you a practitioner code and, within three working days, send you a FAMS registration form. You need to complete and sign the mandate and return them to our Receipts and Payments Department together with any other relevant documentation (e.g a copy of your up-to-date practising certificate (both sides if applicable)). We will activate your practitioner code when we receive these and confirm in writing that the code can now be used.
Entry onto the FAMS database does not mean you are registered to carry out legal aid work. You cannot provide legal assistance if your firm is not registered. In criminal and children's legal assistance you must register as a solicitor even if your firm is already registered.