Known for being one of the poshest personalities on TV, Mark-Francis Vandelli rose to reality fame back in 2011 when he joined the soon-to-be hit show Made In Chelsea.The star, who recently appeared on Celebs Go Dating, slotted perfectly into the SW3-based cast but has now revealed that he didn't know any of his co-stars before joining. Chatting with OK! this week, Mark said: "I was the black sheep. I didn’t know a single person.