Harry Styles might have ditched them for a romantic few days with apparent new girlfriend Taylor Swift, but he was back with the rest of the One Direction boys as the Daily Mirror caught them beginning filming for their new documentary – to be directed by Supersize Me man Morgan Spurlock.

The four of them have just spoken to Billboard magazine, with Louis Tomlinson mentioning the doc and saying: “We've been documenting stuff for a long time actually, just because it's important. We've had a crazy week and a crazy year -- it's important to document everything on the way really. I'm really excited about the prospect of the film, it's a great chance to all get across our personalities. The fans do know them to a degree, but they'll get a real chance to have a real insight on what our day to day is and exactly what we do.”

The pictures in the Mirror don’t show us too much more about their personalities other than they don’t really seem to enjoy being cold – something we can all relate to. Styles has been spotted in both the States and the UK with new beau Swift, whilst his pals have had to continue with their work load, but he looked happy to be back among them again as they posed for shots on the banks of the River Thames in London.