Matching of Perm IDs

Regarding the matching, I wanted to confirm why there are records such as https://permid.org/1-5086653966 for a company like Experian, when this appears to be the correct PermID: https://permid.org/1-4295894507. I had this match when I entered a different office location (London instead of Nottingham), so I would just like to clarify the matching criteria, specifically, does it require the head office address?

Additionally, are there other fields we can search on such as director name or Company Registration Number (CRN) (if in the UK) to improve the accuracy of the match?