Nurtured by fellow star Ronan Keating, Shane, Nicky Mark and Kian make up the Irish boy band with the squeakiest of clean images and the mightiest string of number ones. Beloved by eight to 80-year-olds, their Best Pop Act award at the Brits in 2002 was well deserved. Despite the departure of Bryan McFadden to pursue a solo career, the remaining four have carried on, continuing to triumphantly sell-out arenas across the country. Westlife will grace the Stage at the O2 Arena in March with their tour in support of their new album.