But sex workers do not just need protection from being killed or raped.
Working in a table-dancing club is by no means as dangerous as working as a prostitute.
Since then, 150 prostitutes, escorts, strippers, chat-line operators, sex-shop assistants, table dancers, porn stars and glamour models have joined.
Last week, the GMB congress in Blackpool voted overwhelmingly to call for a national debate on the legal rights and working conditions of sex workers.
In early January, the dismembered body of Elizabeth Valad, a London prostitute, was found in a wheelie-bin by a tramp foraging for food.
In the past few weeks, Lopes has been contacted by a prostitute who was raped at work.