Wed 09 Sep 2007Carphone, Tullow set to enter FTSECarphone Warehouse and Tullow Oil look set to make their debuts on the FTSE 100 Index of blue chip companies when the latest reshuffle takes place later this month.Exploration company Tullow Oil, which listed in 1994, is expected to enter the top flight when the FTSE Group carries out its quarterly review in just under two weeks' time.