Question: What pop groups was the female presenter of the Ninja Warrior UK a part of?

full_context: Document 1: Ben Shephard: Benjamin Peter Sherrington "Ben" Shephard (born 11 December 1974) is an English television presenter and journalist who is currently employed by ITV and Sky Sports (albeit for Goals on Sunday only). His most recognised role was as a main presenter on the now defunct breakfast programme "GMTV". He has hosted game shows such as "The Krypton Factor" (2009–2010), "Tipping Point" (2012–present) and "Ninja Warrior UK" (2015–present).
Document 2: American Ninja Warrior (season 5): The fifth season of American Ninja Warrior premiered on G4 on June 30, 2013, with subsequent shows airing on both G4 and NBC. Host Matt Iseman returned for his fifth season, while newcomers Akbar Gbaja-Biamila and Jenn Brown replaced skier Johnny Moseley and Angela Sun. Similar to previous seasons, the winner receives $500,000 and the coveted title, "American Ninja Warrior". This also marks the second season Mount Midoriyama was held on U.S. soil.
Document 3: Ninja Warrior UK (series 2): The second series of Ninja Warrior UK which ITV renewed for a second series on 29 May 2015, and began on 2 January 2016. The show was presented by Ben Shephard, Chris Kamara and Rochelle Humes. Owen "The Stuff" McKenzie was the contestant to go the furthest in the second series. As with series 1, no women advanced past the semi-finals.
Document 4: The Saturdays discography: English-Irish girl group The Saturdays have released five studio albums, one compilation album, two extended plays and eighteen singles. The Saturdays were formed in 2007, with a number of different auditions through their management: Frankie Sandford, Rochelle Wiseman, Una Healy, Mollie King and Vanessa White were the successful auditionees and were granted a place within the band.
Document 5: Ninja Warrior UK: Ninja Warrior UK is the British version of the Japanese assault course game show "Sasuke". The show, which began airing on 11 April 2015, is hosted by Ben Shephard, Chris Kamara and Rochelle Humes.
Document 6: Vanessa White: Vanessa Karen White (born 30 October 1989) is an English singer-songwriter, dancer and actress. She rose to fame in 2008 as a member of British-Irish girl group The Saturdays, signed to Fascination and Polydor Records. The group have achieved substantial success with numerous top-ten hits as well as a number one single. She is the youngest member of the group.
Document 7: Frankie Bridge: Francesca "Frankie" Bridge (née Sandford, born 14 January 1989) is an English singer-songwriter, formerly a member of S Club 8 and a member of girl group The Saturdays, signed to the Fascination and Polydor labels. The group has released sixteen singles, of which thirteen have reached the Top 10 on the UK Singles Chart, including one UK number-one single, "What About Us". In addition, the group has had five Top 10 albums on the UK Albums Chart, which have all gained a certification from the British Phonographic Industry. Throughout Bridge's time in the music industry, she has achieved nineteen UK Top 10 Singles and six UK Top 10 Albums.
Document 8: American Ninja Warrior (season 2): The second season of "American Ninja Warrior" began on December 8, 2010, in Venice Beach, California where 300 competitors took on the course. The 16 semi-finalists moved on to the ""Ninja Warrior Boot Camp"" in the remote California mountains, where they competed in a series of team challenges. Then, the final moved on to compete in the season finale of "American Ninja Warrior 2" as a part of "Sasuke 26" at Mount Midoriyama in Japan. The series concluded on January 2, 2011.
Document 9: Rochelle Humes: Rochelle Eulah Eileen Humes (née Wiseman; born 21 March 1989) is an English singer and television presenter, best known for her work in pop groups S Club 8 and The Saturdays. Humes has achieved six Top 10 hits with S Club 8 and thirteen Top 10 hits with girl group The Saturdays, including number-one hit "What About Us".
Document 10: Sarah Harding: Sarah Nicole Harding (born Sarah Nicole Hardman; 17 November 1981) is an English singer-songwriter, dancer, model, and actress. She rose to fame in late 2002 when she auditioned for the reality television show "" on ITV. The programme announced that Harding had won a place as a member of the girl group, Girls Aloud. The group has achieved massive success, having twenty consecutive top ten singles (including four number ones) in the UK, six studio albums have all been certified platinum by the British Phonographic Industry (BPI), two of which went to number one in the UK, and accumulating a total of five BRIT Award nominations. In 2009, Girls Aloud won "Best Single" with their song "The Promise".
Document 11: Ninja Warrior UK (series 1): The first series of Ninja Warrior UK premiered on 11 April 2015. The show was presented by Ben Shephard, Chris Kamara and Rochelle Humes. The top contestant in the first series was Timothy Shieff. Although many women competed in the competition, no women advanced past the semi-finals.
Document 12: Sophie Ellis-Bextor: Sophie Michelle Ellis-Bextor (born 10 April 1979) is an English singer, songwriter and model. She first came to prominence in the late 1990s, as the lead singer of the indie rock band Theaudience. After the group disbanded, Ellis-Bextor went solo, achieving widespread success in the early 2000s. Her music is a mixture of mainstream pop, disco, nu-disco, and 1980s electronic influences.
Document 13: The Saturdays: The Saturdays was a British-Irish girl group based in London, England. The group formed during the summer of 2007. The line up consisted of Frankie Bridge, Una Healy, Rochelle Humes, Mollie King and Vanessa White. They were formed through Fascination Records, who gave them an instant record deal with the label as well as a sub-division of Polydor Records. As soon as the contract was finalised The Saturdays went on tour with Girls Aloud during their Tangled Up Tour. The group's music style is pop, however throughout their career their management have experimented with dance-pop and electropop. To create this music, Ina Wroldsen, Steve Mac and Quiz & Larossi have been heavily involved.
Document 14: Mollie King: Mollie Elizabeth King (born 4 June 1987) is an English singer-songwriter. She is best known for being a member of girl group The Saturdays. In the Saturdays, King has had thirteen top-ten and eight top-five singles, including the UK no.1 hit What About Us on the UK Singles Chart and five top-ten albums on the UK Albums Chart. Before The Saturdays, King was a member of another girl group, Fallen Angelz, with whom she appeared on "The X Factor". In 2015, King signed a solo deal with Island Records.
Document 15: American Ninja Warrior (season 4): The fourth season of "American Ninja Warrior" began on May 20, 2012, and aired on NBC and G4. This was a landmark season for "Ninja Warrior", as the entire format was overhauled. For the first time, the finals took place on U.S. soil. In addition, regional qualifiers were added, taking place in Dallas, TX, Miami, FL, and the series' flagship location, Venice Beach, CA. New co-host Jonny Moseley replaced Jimmy Smith, while Angela Sun replaced Alison Haislip. Again, the winner would have received $500,000 and the coveted "American Ninja Warrior" title. Brent Steffensen became the first contestant to complete the ultimate cliffhanger.
ground_truth: S Club 8 and The Saturdays