The live launch of Big Brother will be starting tonight on ITV2 and ITVX at 9pm. The Big Brother: Late and Live show will then be airing at 10.30pm after the live launch. Who won Celebrity Big Brother 2025? Watch the Big Brother live launch, September 28, on ITV2 and ITVX. Arrow MORE: ‘I binged it all – Sheridan Smith was superb’: Your favourite true-crime dramasArrow MORE: When does Big Brother 2025 start?