"You could actually have this shift where people no longer think paying for sex is a legitimate activity."
CONSENT
The fact that so many trafficked women are forced into prostitution has injected the debate with fresh urgency.
The United Nations says a revolution in affordable transport and instant communication has increased trafficking over the past decade, with the trade now worth an estimated $30 billion.
Some 85 percent of women found working in British brothels are estimated to be from outside Britain, a reversal from 10 years ago when 85 percent of them were British citizens.
There are women who argue that they deserve the right to sell sex, and that prosecuting their customers would only make the trade more dangerous.
Amanda Brooks, a Texan former call girl and author of "The Internet Escort's Handbook", is among these who oppose any attempts to criminalise her trade.
"I understand why feminists want to reduce demand. I'm very sympathetic. I just think you need to be a little realistic. Even in the U.S. which has been heavily criminalising both buying and selling sex, it's still a thriving industry.
"There's always going to be the demand. The question is how do you regulate it so it's safest for everyone involved? I don't think the best way is to criminalise consenting adults."
There was no consent involved for Alicia. Free now after months of abuse, she is trying to come to terms with her experience.
"You always think: if I had been stronger, if I had talked out, if I had screamed to the outside world, maybe they would hear," she says.
"My thoughts were I wanted to just kill myself. But now I'm thinking it's worth it to be alive."
