Girls Aloud by Louis Walsh until 2005 when Hilary Shaw replaced him. The new group competed with the boys' winning group, One True Voice to have 2002's Christmas number one single. Girls Aloud won the battle with their single "Sound of the Underground", produced by Brian Higgins and Xenomania. The song spent four consecutive weeks at number one and was certified platinum in March 2003. The song received critical acclaim; Alexis Petridis of "The Guardian" stated that "it proved a first: it was a reality pop record that didn't make you want to do physical harm to everyone involved in its manufacture".
Girls Aloud of the five members being the face of a different shampoo. The same year, Girls Aloud also sealed a deal with the UK division of Samsung. They endorsed mobile phones and MP3 players, made personal appearances and sang at Samsung events, and contributed to competition prizes, among other activities. The Samsung F210 Purple came with a 1GB memory card featuring Girls Aloud content. Girls Aloud appeared in television advertisements for Nintendo DS the following year. The girl group signed a deal to front a promotional campaign for a new low-calorie KitKat bar called "Senses" in March 2008. The chocolate bar