Fishers, it sounds as though you are already confused. UKAS accreditation simply ensures that the scheme does what it says on the tin. But person certifcation and company certification say quite different things on the tin.
Imagine you take your car to the garage. The mechanic may well be qualified. but if the garage dont give him ongoing training, never surervise or check his work, never give him the latest technical circulars from the manufactuer, pay no heed to customer complaints, etc, are you as happy to go to that garage, just because the mechanic is well qualifed, as one that has well qualified mechanics and all the other management systems described above in place???
Or put it another way. Some of the officers of a well known metropolitan fire and rescue service may have some reasonable knowledge of fire safety. But if they are not managed properly, with no quality assurance of the drivel some of them put in notices, if their ongoing training is not great, if they are not kept up to date with changes in standards, and if no one ever goes out and finds out how they perform in the field, is it any wonder that some of their work is shoddy and awful.
Put simply: PERSON CERTIFICATION (or other verification of person competence) + QUALITY MANAGEMENT = COMPANY CERTIFICATION.
hence the sctor has advised people to go for COMANIES that are certifcated under a UKAS accredited scheme.