THE PORN DIRECTOR Mum thought I was wasting my talent. She couldn't see that it was somewhere that needed developing Arts graduate, Anna Span,

According to a survey carried out by Durex, pornography is very popular. Durex says it is the world's favourite sexual enhancer and as many as 50% of the UK's adult population watch with a partner.

In Sex Lies and Videotape, Streets of Vice meets some of the people who make a living out of pornography.

Anna Span is one of Britain's only female porn directors. She studied at one of the top arts schools in the country and was the first student to offer pornography as her graduation film.

STREETS OF VICE Sex in the City Tuesday 22 March 2005, 2305GMT, BBC One Smack Alley Tuesday 29 March 2005, 2305BST, BBC One Men for Hire Tuesday 5 April 2005, 2305BST, BBC One Behind Closed Doors Tuesday 12 April 2005, 2305BST, BBC One Sex Lives and Videotape Tuesday 19 April 2005, 2305BST, BBC One Sources of Help and Advice on issues raised in the series

Matty is one of Britain's top gay porn stars. He works just two days a week. He has been in the industry for over eight years and has made more than 20 films.

Both are relaxed about their work and happy to talk about it. But their parents are less sure. Matty's mother worries about his health and the risk of sexually transmitted disease. Anna's mother thinks she is wasting her talents.

But other members of an older generation have a more positive attitude to pornography. At the age of 59, Francesca has recently embarked on a new career as a porn idol. Momma Fran as she is known to fans on her website is what is called in the industry a BBW - Big Beautiful Woman.