Westlife are an Irish boy band, formed in 1998 in Sligo, Ireland. They disbanded in 2012 and reunited in 2018. The group currently consists of Shane Filan, Markus Feehily, Kian Egan and Nicky Byrne. They have released eleven studio albums: four as a five-piece, including ex-band member Bryan McFadden, and seven are as a four-piece. The group rose to fame with their debut international self-titled studio album, Westlife in 1999.
19 out of their 29 singles as lead artists and as featured artists received UK certifications from 1999 to 2019, 17 out of 29 singles from 1999 to 2009 reached the top 2 on the UK Singles Chart. They are the top act with most Number 1 debuts on the UK Singles Chart, with all 14 of their chart-toppers landing there in their first week. They have the second most certifications for a boy band in the UK Singles Chart after Take That and the most singles certifications for a pop band on the UK number one singles chart since The Beatles.
The group have accumulated 14 number-one singles as a lead artist as well as having eight number-one albums in the United Kingdom, making them Ireland's most prolific chart-toppers. They are the biggest selling album group of the 2000s decade in the UK as well.
They are holders of the following Guinness World Records: first to achieve seven consecutive number-one singles in the UK, most public appearances in 36 hours by a pop group, most singles to debut at number one on the UK chart and top selling album group in the United Kingdom in the 21st century. The pop band has received numerous accolades including one World Music Award, two Brit Awards, four MTV Awards, four Record of the Year Awards, with a total of 94 awards.