It is definately called Celebrity Soup.
http://uk.youtube.com/watch?v=k_BaHsXTpzM
http://uk.youtube.com/watch?v=JRnSYP2mZXA
She's more of a guest in those clips. I'd hardly call it presenting.
Needless to say Nikki presenting BBLB would be a disaster.
The days of ex-housemates getting TV presenting jobs after Big Brother are over.