I found this on the Masonic Province of Devon website. It may clarify some of the above.
The Library at Grand Lodge, Freemason’s Hall, 60 Great Queen Street, London WC2B 5AZ, holds records on all members of the Craft. We are advised that members of the public are currently unable to visit the Library to conduct their own genealogical research, but the Library undertakes such research on the enquirer's behalf. If the name or number of a lodge that a man belonged to is known there is no charge, but if this information is not known the research is undertaken on payment of a search fee. The charge for such research is £30 per name and this charge is not refundable in the event of a negative result.
Regards... Andrew.