Celebrity Big Brother 8 was the eighth series of the British reality television series Celebrity Big Brother and the first series of Big Brother UK to air on Channel 5. It launched on 18 August 2011 at 9 pm on Channel 5. It ran for 22 days concluding on 8 September 2011, making it the shortest Channel 5 series of Celebrity Big Brother to date. It was followed by the twelfth regular series of Big Brother, which launched the following night.