It campaigns for the decriminalisation of prostitution, and to have sex work acknowledged as viable labour.

The union now has official recognition as the sex industry branch of the GMB.

[1] Some of the services offered by the union include: self-defence classes, free legal advice and training for members who wish to leave the sex industry.

The union was formed in 2000 partly as a response to actions taken by Westminster City Council in London to try to remove prostitutes from the area.

They are a member of Backlash, a pressure group formed in 2005 in order to oppose a new law criminalising possession of "extreme pornography".