Question: Which co-host of the broadcast event of "Children in Need 2015" is best known for her work in pop groups S Club 8 and The Saturdays?
Sentence (from "Children in Need 2015"): 2015 marks the 30th birthday of the charity's mascot, Pudsey Bear, since 1985, and the 35th anniversary of the appeal which culminated in a live broadcast on BBC One and BBC Two on the evening of Friday 13 November until the early hours of Saturday 14 November.
Relevant evidence: No