Hi Shan,
Try Cap Camerat Business Jet at Cannes Mandelieu Airport.
They fly various Citations (Bravo, Excell) and their Chief Pilot is David Beechcroft-Kay.
I'm shure u will find them under intl enquiries.
They had a few rightseats going a while ago, dunno about left seats.
Do think a rating on type is required though.
cheers,
Littletony.