Season
- Season 0 1970-01-01
- Season 1 2004-09-04
- Season 2 2005-08-20
- Season 3 2006-08-19
- Season 4 2007-08-18
- Season 5 2008-08-16
- Season 6 2009-08-22
- Season 7 2010-08-21
- Season 8 2011-08-20
- Season 9 2012-08-18
- Season 10 2013-08-31
- Season 11 2014-08-30
- Season 12 2015-08-25
- Season 13 2016-08-27
- Season 14 2017-09-02
- Season 15 2018-08-31
Season 15 Episode
- Season 8 Episode 1
- Season 8 Episode 2
- Season 8 Episode 3
- Season 8 Episode 4
- Season 8 Episode 5
- Season 8 Episode 6
- Season 8 Episode 7
- Season 8 Episode 8
- Season 8 Episode 9
- Season 8 Episode 10
- Season 8 Episode 11
- Season 8 Episode 12
- Season 8 Episode 13
- Season 8 Episode 14
- Season 8 Episode 15
- Season 8 Episode 16
- Season 8 Episode 17
- Season 8 Episode 18
- Season 8 Episode 19
- Season 8 Episode 20
- Season 8 Episode 21
- Season 8 Episode 22
- Season 8 Episode 23
- Season 8 Episode 24
- Season 8 Episode 25
- Season 8 Episode 26
- Season 8 Episode 27
- Season 8 Episode 28
- Season 8 Episode 29
- Season 8 Episode 30
- Season 8 Episode 31
The X Factor - Season 8 Episode 28 Semi-Final
5.11 48 minutes Dermot O'Leary hosts the semi-finals. The four remaining act must perform two songs each, and it will be up to them to really sing their hearts out if they are to be in with a chance of making it to next week's final.
