LONDON, UNITED KINGDOM - SEPTEMBER 11: Harry Styles, Louis Tomlinson, Niall Horan, Liam Payne and Zian Malik of One Direction attends the launch of their debut single 'What Makes You Beautiful' at HMV, Oxford Street on September 11, 2011 in London, England. (Photo by Fred Duval/FilmMagic)Liam Payne found fame with One

Liam Payne has opened up about his secret battle with depression, which he struggled with during his time on the road with One Direction.

The singer — who welcomed son Bear with girlfriend Cheryl eight months ago— admitted he had to force fake smiles for performances as he attempted to cope with the band’s unprecedented success.

Although being a member of the world’s biggest boyband was a dream come true for Liam, at times the constant workload proved to be “too much” for the singer and eventually he reached breaking point.

Louis Tomlinson opened up about his lack of confidence while in One Direction

Liam Payne has opened up about his battle with depression while in One Direction [Getty ]

“I shouldn’t have been able to do as many shows as we did, if I’m honest about it, if I’m brutally honest about it.

“Going out and putting that happy smile on my face and singing the songs, honestly, sometimes it was like putting on one of those costumes, going out there and, underneath the costume, people don’t really see what’s going on”, Liam told The Sun.

Opening up about the build up to his tipping point, the 24 year old singer cited the constant demands on him and his fellow bandmates to ride the wave of their The X Factor success.

LONDON, ENGLAND - APRIL 16: Liam Payne (L) and Sophia Smith attend The Great Gatsby Ball in support of Trekstock at Bloomsbury Ballroom on April 16, Liam had just broken up with ex-girlfriend Sophia Smith as he struggled with the pressure of being in One Direction [Getty ]

“The more we did, I just don’t think we stopped and celebrated enough how great things were and I think that’s what got on top of us in the end.

“It was like, ‘Oh, you’ve just won three EMAs, but get on the plane and go to the next place’.”

Liam also revealed the situation finally came to a head in October 2015 following his split from his ex Sophia Smith, a former schoolfriend.

Liam Payne and CherylLiam Payne and Cheryl welcomed son Bear eight months ago [Instagram]

One Direction cancelled a performance in Belfast because Liam had been “taken ill”, and Liam now admits that he was in fact struggling to cope, confessing: “I let it get to me that day. I wasn’t in a good place.