In this Sofa Session Martin Parr is in conversation with photographer Derek Ridgers – best known for his striking portraiture of the young people who formed many music subcultures of the 1970s and 1980s.

Martin and Derek touch on Derek’s experiences photographing skinheads, as well as him being branded as a ‘leftie photographer’ while photographing on the streets of London.

Examples of Derek’s images can be seen on his website.

Filmed and edited by Alexander Parkyn-Smith.