This is the full list of people who can be classified as a PEP:
https://www.legislation.gov.uk/uksi/2017/692/regulation/35/made
Also, the law,society’s advice is:
Situations which might suggest you have a PEP client include:
receiving funds in the retainer from a government account
receiving communications on official letterhead from the client or a related person
general conversation with the client or person related to the retainer which links the person to a PEP
news reports suggesting your client is a PEP or is linked to one.