The London premiere of One Direction's debut movie 'This Is Us' is looming and member Niall Horan has revealed that he can't believe all of the opportunities the band has given to him over the years.

Writing on his official Twitter page earlier this afternoon (August 14), the heartthrob explained that he is so thankful for everything he has been able to do as one fifth of One Direction:

"Who is excited about @1DThisIsUs? We honestly cannot believe what has happened to us in past 3 years. It’s been unbelievable and all down to you guys and your constant support!"

'This Is Us' will premiere in London on August 20 and the movie is set to hit UK theatres on August 29. Presenter Will Best has been confirmed to host a live stream of the premiere's red carpet moments.

Meanwhile, highlights from the group's new photoshoot from Fabulous magazine have just been revealed and you can check out some of the images below.