Which was the British girl group Girls Aloud's first single not to reach the top ten on the UK Singles Chart?

Girls Aloud were a British-Irish pop girl group that was created through the ITV talent show "Popstars: The Rivals" in 2002. The group comprised singers Cheryl Cole, Nadine Coyle, Sarah Harding, Nicola Roberts and Kimberley Walsh. The group achieved a string of twenty consecutive top ten singles in the United Kingdom, including four number ones. They also achieved seven certified albums, of which two reached number one. They have been nominated for five Brit Awards, winning the 2009 Best Single for "The Promise".

"Untouchable" is a song performed by pop group Girls Aloud, taken from their fifth studio album "Out of Control" (2008). The song was written by Miranda Cooper, Brian Higgins and his production team Xenomania, and produced by Higgins and Xenomania. Influenced by trance music and Balearic beat, the album version of "Untouchable" is over six minutes long. Remixed for single release in April 2009, "Untouchable" memorably became Girls Aloud's first of only two singles to miss the top ten on the UK Singles Chart.