Certainly, at Heathrow Airport we have a duty to ensure that our celebrity guests can enjoy a bit of privacy without their every movement appearing in the next day's "Hate Mail" or "Sleazerag Sun"
Which is why only "approved" photographers are allowed access to areas where they can take photos of the so-called "celebrity" guests so these pics appear in the Hatemail, Scum, Express, Mirror, Star, Sport, etc?