One section of the film includes a pupil asking: ‘How many gender identities are there?’ It is answered by ‘Kate’, described as an RSE [Relationships and Sex Education] teacher, who tells two children: ‘There are so many gender identities. So we know we have got male and female, but there are over 100 if not more gender identities now.

‘Some people might feel that they are two different genders, people might think they are bi-gender. You have got some people who might call themselves ‘gender-queer’ – just like, I don’t want to be anything in particular, I just want to be me.’

Another speaker is Leo, a health worker who describes himself as a trans man, who tells the children: ‘I told people it wasn’t because I wanted to be trangender but because I wanted to be happy and to be happy I had to be true to who I was. Nobody really treats me differently but I feel that the pieces in my life fit better now.’