0
Jonathan Ansell
Jonathan Ansell
British singer
1
Steve Brookstein
Steve Brookstein
English singer
2
Madness
Madness
English ska band
3
The Overtones
The Overtones
British vocal group
4
JLS
JLS
English pop/R&B group
5
Little Mix
Little Mix
British girl group
6
Rhydian Roberts
Rhydian Roberts
British singer and actor
7
Matt Cardle
Matt Cardle
singer
8
The Killers
The Killers
American rock band
9
Olly Murs
Olly Murs
English singer and songwriter
10
Pentatonix
Pentatonix
American a cappella group
11
Fifth Harmony
Fifth Harmony
American girl group
12
Stiff Little Fingers
Stiff Little Fingers
punk rock band from Belfast, Northern Ireland
13
Blondie
Blondie
American rock band
14
James Arthur
James Arthur
English singer and musician
15
Train
Train
American pop rock band
16
Ella Henderson
Ella Henderson
British recording artist; singer
17
Thousand Foot Krutch
Thousand Foot Krutch
Canadian rock band
18
The Oak Ridge Boys
The Oak Ridge Boys
American band that plays country music
19
House of Heroes
House of Heroes
band
20
Guillemots
Guillemots
indie rock band
21
Liam Payne
Liam Payne
English singer and songwriter
22
Janet Devlin
Janet Devlin
Northern Irish singer/songwriter
23
Ashes Remain
Ashes Remain
24
Malcolm Middleton
Malcolm Middleton
British musician
25
Fleur East
Fleur East
British singer
26
Inspiral Carpets
Inspiral Carpets
British alternative rock band
27
Lene Lovich
Lene Lovich
American new wave singer
28
Joe McElderry
Joe McElderry
English recording artist; singer, television personality
29
The Courteeners
The Courteeners
band
30
Shayne Ward
Shayne Ward
English singer
31
Bellowhead
Bellowhead
band
32
Buckcherry
Buckcherry
American rock band from Los Angeles, California formed in 1995
33
Mystery Jets
Mystery Jets
English indie rock band
34
X Japan
X Japan
Japanese rock band
35
Enter Shikari
Enter Shikari
British post-hardcore band
36
Dawes
Dawes
American folk rock band
37
Capital Lights
Capital Lights
38
Heart
Heart
American rock band
39
Karnivool
Karnivool
Australian progressive rock band
40
Leona Lewis
Leona Lewis
British singer-songwriter
41
Simple Plan
Simple Plan
Canadian rock band
42
Moist
Moist
Canadian rock band
43
3 Doors Down
3 Doors Down
American rock band
44
Ronan Keating
Ronan Keating
Irish singer and songwriter
45
Rage Against the Machine
Rage Against the Machine
American alternative metal band
46
Luna Sea
Luna Sea
Japanese rock band
47
Blood Red Shoes
Blood Red Shoes
English alternative rock duo from Brighton
48
Graham Parker
Graham Parker
British singer
49
Hoobastank
Hoobastank
American rock band
50
Louis Tomlinson
Louis Tomlinson
English singer
51
Blaze Bayley
Blaze Bayley
English singer, lyricist, and songwriter
52
Niall Horan
Niall Horan
Irish singer and songwriter
53
Cher Lloyd
Cher Lloyd
English singer, songwriter and model
54
Bastille
Bastille
English indie pop band
55
Melanie Brown
Melanie Brown
British singer, actress and television personality
56
Alexandra Burke
Alexandra Burke
singer
57
Terrorvision
Terrorvision
British rock band
58
After Forever
After Forever
Dutch metal band
59
The Pogues
The Pogues
British celtic punk band
60
Garth Brooks
Garth Brooks
American country music singer
61
Stereophonics
Stereophonics
Welsh rock band
62
Unknown Mortal Orchestra
Unknown Mortal Orchestra
American and New Zealand rock band
63
Beastie Boys
Beastie Boys
American hip hop band
64
Korn
Korn
American nu metal band
65
The Imperials
The Imperials
American christian music group
66
NSYNC
NSYNC
American boy band
67
Busted
Busted
band
68
AC/DC
AC/DC
Australian hard rock band
69
Travis
Travis
Scottish band
70
Zayn Malik
Zayn Malik
British singer
71
Rascal Flatts
Rascal Flatts
American country rock band
72
Foxy Shazam
Foxy Shazam
American alternative rock band
73
Pennywise
Pennywise
American punk rock band
74
Issues
Issues
American metalcore band
Intro
band
Record Labels

G4 are a four-piece British vocal troupe who first came to prominence when they finished second in Series 1 of The X Factor in 2004, and are known for their operatic delivery of modern pop songs. Originally a barbershop quartet, the members met at the Guildhall School of Music and Drama, from which the name G4, standing for "Guildhall 4", derives.

In 2007 the band disbanded, citing disagreements among the members, but reunited in 2014 to celebrate their ten-year anniversary with a number of concerts nationwide, leading to a new album for Christmas 2015.

The group currently consists of original members tenor Jonathan Ansell and baritone Mike Christie, with Lewis Raines joining after former low tenor Ben Thapa left in 2018, and Duncan Sandilands replacing former bass singer Nick Ashby in 2019.