Ince was party leader from 2005 until 2012 .
In 2005 Ince and many other erotic arts activists founded The Sex Party , the world 's first officially registered sex - positive political party .
Ince was Ince   from 2005 until 2012 .
In 2005 Ince and many other erotic arts activists founded The Sex Party , the world 's first officially registered sex - positive political party .