Celebrities are working with the Heads Together campaign to show people it's #OkToSay

The films are the latest in a series created by Heads Together, which has also released a new YouGov poll showing that four out of ten (42%) men have had a conversation recently about mental health compared to six out of ten (58%) women. The figures also show that men (29%) are less likely than women (37%) to expect to talk about their mental health in the next six months although men and women find these conversations equally helpful (83%).

Lady Gaga and Prince William

Last year Lady Gaga released an open letter through her Born This Way Foundation revealing that she lives with Post Traumatic Stress Disorder. The Duke was hugely impressed with the openness displayed in the letter and asked Lady Gaga to get involved with the Heads Together campaign.

In their FaceTime call they discussed how opening up and having conversations about mental health was vital to shatter the stigma that still surrounds these issues. Lady Gaga said she felt people with mental health challenges were 'not hiding anymore' with The Duke adding that it is time 'to feel normal about mental health – it's the same as physical health' and that good conversations can 'really make such a difference.'

Rio Ferdinand and Jamie

Rio Ferdinand is a full time dad to his 3 children after losing his wife Rebecca to breast cancer in May 2015. In his film, he opens up to his business partner, agent and close friend Jamie Moralee about how they first talked about his grief.

Stephen Fry and Bill

Stephen Fry talks with his psychiatrist Bill on a bench in St James’s Park about his mental health breaking down and how talking openly helped him heal, and continues to help him manage his mental health. The film was directed by Simon Amstell, who has talked and written about his own mental health challenges.

Adwoa and Camilla

Model Adwoa Aboah opens up to her mother Camilla Lowther about her battle with depression, which over the years has been so severe that she once tried to take her own life.

Mim and Ara

BBC 1Extra and Asian Network DJ, Mim Shaikh talks in a recording studio with career mentor Ara Steven about the comfort and relief Mim felt after a conversation about his mental health with Ara.