An independent professional photographer uses a sales tactic of candidly taking photos of others in public and then approaching them and offering them copies for a price. Suppose one of these photographed subjects turns around and subject-access-requests their photo under the Data Protection Act.
Are there intellectual property / creative work / other exemptions that may apply that would allow the photographer to insist on charging for access to the work? Or is the subject entitled to (even full resolution) versions of the photos?