What song was the last number 1 hit on Hit40UK and performed by the Black Eyed Peas?
Hit40UK: Hit40UK was a networked Top 40 chart show broadcasting on around 130 UK commercial radio stations every Sunday from 4pm to 7pm. Hit40UK:  The show was cancelled on 7 June 2009 and the last ever number 1 single was Boom Boom Pow by The Black Eyed Peas, played at 6:52pm. Boom Boom Pow: "Boom Boom Pow" is a song by The Black Eyed Peas released as the lead single from their fifth studio album, "The E.N.D".
Boom Boom Pow