The Big Brother 2023 season in the UK (also known as Big Brother 20) started on Sunday, October 8, 2023, with a launch show airing on ITV1, ITV2, and ITVX. The rest of the episodes have been broadcast primarily on ITV2 and ITVX, with new episodes airing nightly except Saturdays. The series was hosted by AJ Odudu and Will Best.
In the United States, Big Brother 25 premiered earlier in 2023 on August 2, 2023, on CBS, with a 25th Anniversary special that aired on July 26, 2023. The US season ran through November 9, 2023.
If you were asking about the UK version specifically, it started on October 8, 2023. If it was the US version, it started on August 2, 2023.
