Season 1 (2007)

5.60 avg 10 episodes 7.0 → 6.6 40 min avg

U-shaped

Season 1 episodes - IMDb ratings
#	Title	Rating	Votes
1	2007: Auditions 1	7.0	40
2	2007: Auditions 2	5.6	25
3	2007: Auditions 3	4.9	23
4	2007: Auditions 4	4.9	23
5	2007: Auditions 5	5.4	22
6	2007: Live Semi-Final 1	5.8	24
7	2007: Live Semi-Final 2	5.0	21
8	2007: Live Semi-Final 3	5.1	21
9	2007: The Live Final	5.7	23
10	2007: Live Final - The Results	6.6	28

Season 2 (2008)

5.26 avg 14 episodes 5.3 → 6.0 42 min avg

Big finale

Season 2 episodes - IMDb ratings
#	Title	Rating	Votes
1	2008: Auditions 1	5.3	20
2	2008: Auditions 2	5.1	16
3	2008: Auditions 3	5.1	16
4	2008: Auditions 4	5.1	16
5	2008: Auditions 5	5.1	16
6	2008: Auditions 6	5.1	16
7	2008: Auditions 7	5.8	16
8	2008: Live Semi-Final 1	5.1	15
9	2008: Live Semi-Final 2	5.1	15
10	2008: Live Semi-Final 3	5.8	16
11	2008: Live Semi-Final 4	4.9	15
12	2008: Live Semi-Final 5	5.1	15
13	2008: Live Final	5.1	15
14	2008: Live Final - The Results	6.0	16

Season 3 (2009)

5.41 avg 14 episodes 6.8 → 5.8 42 min avg

Season 3 episodes - IMDb ratings
#	Title	Rating	Votes
1	2009: Auditions 1	6.8	28
2	2009: Auditions 2	5.8	18
3	2009: Auditions 3	5.2	17
4	2009: Auditions 4	5.8	18
5	2009: Auditions 5	4.8	18
6	2009: Auditions 6	5.1	16
7	2009: Auditions 7	5.2	17
8	2009: Live Semi-Final 1	5.1	16
9	2009: Live Semi-Final 2	5.1	16
10	2009: Live Semi-Final 3	5.1	16
11	2009: Live Semi-Final 4	5.1	16
12	2009: Live Semi-Final 5	5.1	16
13	2009: Live Final	5.8	18
14	2009: Live Final - The Results	5.8	19

Season 4 (2010)

5.95 avg 18 episodes 5.4 → 6.2 48 min avg

Season 4 episodes - IMDb ratings
#	Title	Rating	Votes
1	2010: Auditions 1	5.4	18
2	2010: Auditions 2	6.6	17
3	2010: Auditions 3	6.0	15
4	2010: Auditions 4	5.9	14
5	2010: Auditions 5	5.9	13
6	2010: Auditions 6	5.2	14
7	2010: Auditions 7	5.9	13
8	2010: Live Semi-Final 1	5.9	13
9	2010: Live Semi-Final 1 - The Results	5.9	13
10	2010: Live Semi-Final 2	6.4	14
11	2010: Live Semi-Final 2 - The Results	5.9	13
12	2010: Live Semi-Final 3	6.4	14
13	2010: Live Semi-Final 3 - The Results	5.9	13
14	2010: Live Semi-Final 4	5.9	13
15	2010: Live Semi-Final 4 - The Results	5.9	14
16	2010: Live Semi-Final 5	5.9	13
17	2010: Live Semi-Final 5 - The Results	5.9	13
18	2010: Live Final	6.2	16

Season 5 (2011)

5.41 avg 19 episodes 5.8 → 5.5 42 min avg

Rollercoaster

Season 5 episodes - IMDb ratings
#	Title	Rating	Votes
1	2011: Auditions 1	5.8	18
2	2011: Auditions 2	6.0	11
3	2011: Auditions 3	5.0	12
4	2011: Auditions 4	5.7	11
5	2011: Auditions 5	6.0	11
6	2011: Auditions 6	4.5	11
7	2011: Auditions 7	5.8	11
8	2011: Live Semi-Final 1	5.2	10
9	2011: Live Semi-Final 1 - The Results	6.3	12
10	2011: Live Semi-Final 2	5.2	10
11	2011: Live Semi-Final 2 - The Results	5.2	10
12	2011: Live Semi-Final 3	5.2	10
13	2011: Live Semi-Final 3 - The Results	5.2	11
14	2011: Live Semi-Final 4	5.2	11
15	2011: Live Semi-Final 4 - The Results	5.2	10
16	2011: Live Semi-Final 5	5.2	11
17	2011: Live Semi-Final 5 - The Results	5.2	10
18	2011: Live Final	5.3	13
19	2011: Live Final - The Results	5.5	11

Season 6 (2012)

5.84 avg 17 episodes 6.8 → 6.3 42 min avg

Season 6 episodes - IMDb ratings
#	Title	Rating	Votes
1	2012: Auditions 1	6.8	25
2	2012: Auditions 2	5.8	16
3	2012: Auditions 3	5.7	14
4	2012: Auditions 4	5.6	14
5	2012: Auditions 5	6.3	13
6	2012: Auditions 6	6.0	13
7	2012: Auditions 7	5.6	13
8	2012: Live Semi-Final 1	5.9	13
9	2012: Live Semi-Final 2	5.6	13
10	2012: Live Semi-Final 2 - The Results	5.6	12
11	2012: Live Semi-Final 3	5.9	16
12	2012: Live Semi-Final 3 - The Results	5.7	12
13	2012: Live Semi-Final 4	5.7	11
14	2012: Live Semi-Final 4 - The Results	5.7	10
15	2012: Live Semi-Final 5	5.5	11
16	2012: Live Semi-Final 5 - The Results	5.5	11
17	2012: The Live Final	6.3	16

Season 7 (2013)

6.01 avg 18 episodes 7.9 → 6.3 42 min avg

Rollercoaster

Season 7 episodes - IMDb ratings
#	Title	Rating	Votes
1	2013: Auditions 1	7.9	25
2	2013: Auditions 2	7.1	18
3	2013: Auditions 3	6.4	16
4	2013: Auditions 4	5.9	14
5	2013: Auditions 5	6.2	14
6	2013: Auditions 6	5.4	15
7	2013: Auditions 7	6.0	13
8	2013: Live Semi-Final 1	5.9	12
9	2013: Live Semi-Final 1 - The Results	5.0	11
10	2013: Live Semi-Final 2	5.9	12
11	2013: Live Semi-Final 2 - The Results	5.9	12
12	2013: Live Semi-Final 3	5.7	13
13	2013: Live Semi-Final 3 - The Results	6.0	13
14	2013: Live Semi-Final 4	5.9	12
15	2013: Live Semi-Final 4 - The Results	5.3	11
16	2013: Live Semi-Final 5	5.9	12
17	2013: Live Semi-Final 5 - The Results	5.5	11
18	2013: The Live Final	6.3	16

Season 8 (2014)

5.57 avg 18 episodes 6.6 → 6.9 42 min avg

Season 8 episodes - IMDb ratings
#	Title	Rating	Votes
1	2014: Auditions 1	6.6	20
2	2014: Auditions 2	6.8	16
3	2014: Auditions 3	6.0	17
4	2014: Auditions 4	6.1	15
5	2014: Auditions 5	6.5	17
6	2014: Auditions 6	6.4	16
7	2014: Auditions 7	7.1	16
8	2014: Live Semi-Final 1	5.2	14
9	2014: Live Semi-Final 1 - The Results	4.0	12
10	2014: Live Semi-Final 2	5.6	14
11	2014: Live Semi-Final 2 - The Results	4.0	12
12	2014: Live Semi-Final 3	5.5	14
13	2014: Live Semi-Final 3 - The Results	3.8	12
14	2014: Live Semi-Final 4	6.2	15
15	2014: Live Semi-Final 4 - The Results	4.1	13
16	2014: Live Semi-Final 5	5.5	13
17	2014: Live Semi-Final 5 - The Results	4.0	11
18	2014: The Live Final	6.9	17

Season 9 (2015)

5.54 avg 18 episodes 6.2 → 6.9 37 min avg

Season 9 episodes - IMDb ratings
#	Title	Rating	Votes
1	2015: Auditions 1	6.2	20
2	2015: Auditions 2	6.8	17
3	2015: Auditions 3	5.8	16
4	2015: Auditions 4	6.2	16
5	2015: Auditions 5	6.8	20
6	2015: Auditions 6	6.1	15
7	2015: Auditions 7	6.0	15
8	2015: Live Semi-Final 1	6.1	15
9	2015: Live Semi-Final 1 - The Results	3.6	12
10	2015: Live Semi-Final 2	6.1	15
11	2015: Live Semi-Final 2 - The Results	3.8	12
12	2015: Live Semi-Final 3	6.1	18
13	2015: Live Semi-Final 3 - The Results	4.1	15
14	2015: Live Semi-Final 4	5.9	15
15	2015: Live Semi-Final 4 - The Results	3.6	13
16	2015: Live Semi-Final 5	6.1	14
17	2015: Live Semi-Final 5 - The Results	3.6	12
18	2015: The Live Final	6.9	19

Season 10 (2016)

5.88 avg 18 episodes 6.5 → 6.2 42 min avg

Rollercoaster

Season 10 episodes - IMDb ratings
#	Title	Rating	Votes
1	2016: Auditions 1	6.5	24
2	2016: Auditions 2	6.8	20
3	2016: Auditions 3	6.0	19
4	2016: Auditions 4	6.3	18
5	2016: Auditions 5	6.2	20
6	2016: Auditions 6	5.6	16
7	2016: Auditions 7	5.5	17
8	2016: Live Semi-Final 1	5.5	17
9	2016: Live Semi-Final 1 - The Results	5.6	15
10	2016: Live Semi-Final 2	5.9	16
11	2016: Live Semi-Final 2 - The Results	5.9	15
12	2016: Live Semi-Final 3	6.1	15
13	2016: Live Semi-Final 3 - The Results	5.0	14
14	2016: Live Semi-Final 4	5.8	14
15	2016: Live Semi-Final 4 - The Results	5.3	13
16	2016: Live Semi-Final 5	6.2	15
17	2016: Live Semi-Final 5 - The Results	5.4	13
18	2016: The Live Final	6.2	19

Season 11 (2017)

6.07 avg 18 episodes 6.7 → 6.5 45 min avg

Season 11 episodes - IMDb ratings
#	Title	Rating	Votes
1	2017: Auditions 1	6.7	32
2	2017: Auditions 2	7.0	31
3	2017: Auditions 3	6.7	28
4	2017: Auditions 4	6.4	28
5	2017: Auditions 5	6.5	27
6	2017: Auditions 6	6.5	26
7	2017: Auditions 7	6.2	25
8	2017: Live Semi-Final 1	6.3	23
9	2017: Live Semi-Final 1 - The Results	5.1	21
10	2017: Live Semi-Final 2	6.6	23
11	2017: Live Semi-Final 2 - The Results	5.4	20
12	2017: Live Semi-Final 3	6.6	22
13	2017: Live Semi-Final 3 - The Results	5.2	18
14	2017: Live Semi-Final 4	6.2	22
15	2017: Live Semi-Final 4 - The Results	5.0	19
16	2017: Live Semi-Final 5	5.9	23
17	2017: Live Semi-Final 5 - The Results	4.5	20
18	2017: The Live Final	6.5	28

Season 12 (2018)

6.24 avg 18 episodes 6.5 → 7.3 51 min avg

Season 12 episodes - IMDb ratings
#	Title	Rating	Votes
1	2018: Auditions 1	6.5	34
2	2018: Auditions 2	6.8	30
3	2018: Auditions 3	6.8	29
4	2018: Auditions 4	6.4	25
5	2018: Auditions 5	6.3	26
6	2018: Auditions 6	6.7	26
7	2018: Auditions 7	6.1	25
8	2018: Live Semi-Final 1	6.0	26
9	2018: Live Semi-Final 1 - The Results	5.5	23
10	2018: Live Semi-Final 2	6.1	26
11	2018: Live Semi-Final 2 - The Results	5.6	22
12	2018: Live Semi-Final 3	6.4	27
13	2018: Live Semi-Final 3 - The Results	5.6	22
14	2018: Live Semi-Final 4	6.3	26
15	2018: Live Semi-Final 4 - The Results	5.9	22
16	2018: Live Semi-Final 5	6.5	29
17	2018: Live Semi-Final 5 - The Results	5.6	22
18	2018: The Live Final	7.3	32

Season 13 (2019)

6.20 avg 19 episodes 6.0 → 6.2 54 min avg

Season 13 episodes - IMDb ratings
#	Title	Rating	Votes
1	2019: Auditions 1	6.0	42
2	2019: Auditions 2	6.1	36
3	2019: Auditions 3	5.2	36
4	2019: Auditions 4	6.7	32
5	2019: Auditions 5	6.4	31
6	2019: Auditions 6	6.6	33
7	2019: Auditions 7	6.0	32
8	2019: Auditions 8	6.8	33
9	2019: Live Semi-Final 1	6.6	33
10	2019: Live Semi-Final 1 - The Results	5.7	30
11	2019: Live Semi-Final 2	6.0	31
12	2019: Live Semi-Final 2 - The Results	5.6	26
13	2019: Live Semi-Final 3	7.0	31
14	2019: Live Semi-Final 3 - The Results	6.0	29
15	2019: Live Semi-Final 4	6.3	29
16	2019: Live Semi-Final 4 - The Results	5.6	26
17	2019: Live Semi-Final 5	6.3	29
18	2019: Live Semi-Final 5 - The Results	6.7	25
19	2019: The Live Final	6.2	31

Season 14 (2020)

5.89 avg 16 episodes 6.2 → 6.3 74 min avg

Season 14 episodes - IMDb ratings
#	Title	Rating	Votes
1	2020: Auditions 1	6.2	45
2	2020: Auditions 2	6.2	33
3	2020: Auditions 3	6.3	33
4	2020: Auditions 4	6.0	31
5	2020: Auditions 5	6.2	27
6	2020: Auditions 6	6.5	29
7	2020: Auditions 7	6.2	29
8	2020: Auditions 8	6.3	28
9	2020: The Finalists Revealed	5.2	23
10	2020: Semi-Final 1	6.5	27
11	2020: Semi-Final 2	5.3	24
12	2020: Semi-Final 3	5.1	23
13	2020: Semi-Final 4	4.4	10
14	2020: Semi-Final 5	5.4	19
15	2020: The Live Final	6.1	20
16	Christmas Special	6.3	9

Season 15 (2022)

6.30 avg 14 episodes 6.5 → 6.0 75 min avg

Season 15 episodes - IMDb ratings
#	Title	Rating	Votes
1	2022: Auditions 1	6.5	31
2	2022: Auditions 2	6.5	26
3	2022: Auditions 3	6.1	25
4	2022: Auditions 4	6.5	24
5	2022: Auditions 5	6.7	24
6	2022: Auditions 6	6.7	26
7	2022: Auditions 7	6.6	25
8	2022: Auditions 8	6.4	25
9	2022: Live Semi-Final 1	6.3	25
10	2022: Live Semi-Final 2	6.2	25
11	2022: Live Semi-Final 3	6.2	25
12	2022: Live Semi-Final 4	5.7	25
13	2022: Live Semi-Final 5	5.8	24
14	2022: The Live Final	6.0	27

Season 16 (2023)

6.34 avg 14 episodes 6.2 → 5.7 75 min avg

Season 16 episodes - IMDb ratings
#	Title	Rating	Votes
1	2023: Auditions 1	6.2	29
2	2023: Auditions 2	6.3	25
3	2023: Auditions 3	6.4	24
4	2023: Auditions 4	6.2	24
5	2023: Auditions 5	6.6	25
6	2023: Auditions 6	6.5	24
7	2023: Auditions 7	6.1	24
8	2023: Auditions 8	6.1	23
9	2023: Live Semi-Final 1	6.5	23
10	2023: Live Semi-Final 2	6.9	23
11	2023: Live Semi-Final 3	6.1	23
12	2023: Live Semi-Final 4	6.6	24
13	2023: Live Semi-Final 5	6.6	23
14	2023: The Live Final	5.7	29

Season 17 (2024)

5.94 avg 14 episodes 6.0 → 6.1 79 min avg

Season 17 episodes - IMDb ratings
#	Title	Rating	Votes
1	2024: Auditions 1	6.0	28
2	2024: Auditions 2	6.1	21
3	2024: Auditions 3	5.7	23
4	2024: Auditions 4	6.2	21
5	2024: Auditions 5	6.0	21
6	2024: Auditions 6	6.4	19
7	2024: Auditions 7	6.0	16
8	2024: Auditions 8	5.9	18
9	2024: Live Semi-Final 1	6.2	19
10	2024: Live Semi-Final 2	5.9	19
11	2024: Live Semi-Final 3	5.5	19
12	2024: Live Semi-Final 4	5.3	19
13	2024: Live Semi-Final 5	5.8	19
14	2024: The Live Final	6.1	19

Season 18 (2025)

6.05 avg 14 episodes 6.0 → 6.6 79 min avg

Season 18 episodes - IMDb ratings
#	Title	Rating	Votes
1	Auditions 1	6.0	25
2	Auditions 2	5.4	25
3	Auditions 3	6.1	20
4	Auditions 4	6.3	18
5	Auditions 5	6.4	18
6	Auditions 6	6.4	19
7	Auditions 7	5.9	17
8	Auditions 8	5.9	18
9	Semi-Final 1	5.9	21
10	Semi-Final 2	5.9	18
11	Semi-Final 3	5.8	20
12	Semi-Final 4	5.7	18
13	Semi-Final 5	6.4	17
14	The Live Final	6.6	21

Season 19 (2026)

5.09 avg 14 episodes 5.0 → 5.0 76 min avg

Season 19 episodes - IMDb ratings
#	Title	Rating	Votes
1	Auditions 1	5.0	25
2	Auditions 2	5.9	22
3	Auditions 3	5.1	18
4	Auditions 4	5.5	17
5	Auditions 5	5.6	17
6	Auditions 6	5.2	17
7	Auditions 7	4.9	16
8	Auditions 8	4.4	17
9	Live Semi-Final 1	4.5	16
10	Live Semi-Final 2	4.7	15
11	Live Semi-Final 3	5.6	14
12	Live Semi-Final 4	5.0	15
13	Live Semi-Final 5	4.8	14
14	Live Final	5.0	18

Britain's Got Talent (2007)

Cast

Seasons