By Natalie Corner For Mailonline. Kiki Minaj, who moved to London from the West Midlands to be an accountant, but is now one of the leading black female adult performers in the UK, appeared on Channel 5's new series The Sex Business, which delves behind the scenes in the porn industry. She told how she can charge up to twice as much as her male co-stars for the same amount of work, and said 'there's no problem with this sexism thing in the porn industry', because 'it's all about the girl'. According to Kiki, intercourse only accounts for around 30 per cent of her time on set, most of which she says is spent 'waiting around'.