Cineworld and Odeon have both offered paid-for memberships for many years now which allow you to see as many 2D movies as you want at their cinemas for a set monthly fee.
These subscription deals are generally for serious movie buffs who tend to see three or more movies a month – and of course it's only worthwhile if you live or work near that brand of cinema. Yet as memberships for some are now as little as £11 a month, it may now be worth it for more people.