Boys Allowed perform Girls Aloud's 'Biology' - Let's Sing and Dance for Comic Relief 2017 - BBC

Subscribe and 🔔 to the BBC 👉 https://bit.ly/BBCYouTubeSub Watch the BBC first on iPlayer 👉 https://bbc.in/iPlayer-Home Programme website: http://bbc.in/2mBgEcV Boys Allowed perform Girls Aloud hit 'Biology'. #bbc