Electrician qualifications and registration

[JasonByrne]

I'm trying to understand with regards to electrician qualifications and registration for domestic properties.

I've heard of various qualifications and registrations such as:
City and Guilds and the various levels (e.g. 1, 2 and 3)
NIC EIC
Part P

However, all of these qualifications and registrations are confusing.

If I wanted to get an electrician to do work that requires an EIC certificate, what qualifications and registrations should I be looking for? I've come across electricians who will do the work and then they get other higher qualified electrician to then certify their work. This feels like it's not as good as getting an electrician that can self certify, no?

Can anyone help explain things in more layman terms?
Thank you

[Sanidly]

Assuming you are in England or Wales, I would recommend that you confirm they are a CPS member

[LanestIo]

Had a small electrical job done at my house, and the guy explained all the certificates and registrations. Turns out the licensing procedures involve going through four levels, and getting someone who can self-certify really avoids extra hassle.