What is the law on customers bringing their own wine to consume in a cafe - is their any procedure / criteria the cafe owner has to follow for it to be legal?
It still doesn't answer my question. A lot of places allow customers to bring their own wine even though the premises sell the product themselves, it's called corkage and is legal.
As far as I know there is no issue as the premises is neither selling nor serving the alcohol.
Possibly there would be an issue if they had a corkage fee.
Used to be quite popular with indian restaurants as many would not offer alcohol for their own beliefs.