Backing Vocals – Damon Bunetta, Ian Franzino, Ruth Anne Cunningham*Backing Vocals, Engineer, Instruments [All Other], Producer, Written-By – Julian BunettaBass, Guitar, Keyboards, Programmed By, Vocals [Gang Vocals], Engineer, Producer – Matt Rad*Drums – Stefan LitrownikEngineer [Mix] – John HanesEngineer [Vocals] – Alex OrietEngineer, Instruments [All Other], Producer, Written-By – John Ryan Engineer, Vocals [Gang Vocals] – Petros Anastos-PrastacosMixed By – Serban GheneaWritten-By – Ed Drewett, Wayne Hector

Arranged By [Strings], Strings – Christine WuBacking Vocals – Damon Bunetta, Peter BunettaBacking Vocals, Engineer [Assistant] – Ian FranzinoBacking Vocals, Engineer, Instruments [All], Producer [Vocals], Producer, Written-By – John Ryan , Julian BunettaBacking Vocals, Instruments [All], Producer [Vocals], Written-By – Jamie ScottEngineer – Alex Oriet, Ben "Bengineer" Chang*Engineer [Mix, Assistant] – Ryan LipmanMixed By – Joe ZookWritten-By – Harry Styles, Liam Payne, Louis Tomlinson, Niall Horan, Zayn Malik*

Backing Vocals – Damon Bunetta, Daniel WeinerBacking Vocals, Engineer, Instruments [All], Producer, Producer [Vocals], Written-By – John Ryan , Julian BunettaBacking Vocals, Producer [Vocals], Written-By – Jamie ScottEngineer [Assistant] – Ian FranzinoEngineer [Mix, Assistant] – Ryan LipmanEngineer [Vocals] – Alex Oriet, Ben "Bengineer" Chang*Mixed By – Joe ZookWritten-By – Liam Payne, Louis Tomlinson

Engineer [Assistant], Instruments [All] – Ian FranzinoEngineer [Mix, Assistant] – Ryan LipmanEngineer, Producer, Instruments [All], Producer [Vocals], Written-By – John Ryan , Julian BunettaInstruments [All] – Damon Bunetta, Peter BunettaInstruments [All], Producer [Vocals], Written-By – Jamie ScottMixed By – Joe ZookWritten-By – Liam Payne, Louis Tomlinson

Acoustic Guitar, Engineer, Instruments [All Other], Producer, Written-By – John Ryan Arranged By [Strings], Strings – Christine WuEngineer [Assistant] – Ian FranzinoEngineer, Instruments [All Other], Producer, Written-By – Julian BunettaMixed By – Ash HowesWritten-By – Jamie Scott

Mixed By – Ash HowesProducer, Written-By – Danny Jones , Dougie Poynter, Tom Fletcher Written-By – Niall Horan

Backing Vocals – Damon Bunetta, Daniel WeinerBacking Vocals, Engineer, Instruments [All Other], Producer, Written-By – John Ryan , Julian BunettaEngineer [Assistant] – Ian FranzinoGuitar – Jaco CaracoMixed By – Ash HowesWritten-By – Jamie Scott, Louis Tomlinson

Acoustic Guitar, Electric Guitar, Instruments [All Other], Programmed By, Producer, Written-By – Carl Falk Backing Vocals [Additional], Recorded By [Vocals], Written-By – Savan KotechaBanjo, Mandolin – Ilya ToshinskyBass – Chris Patrick Edited By [Vocals], Producer [Vocals], Recorded By [Vocals] – Kristian LundinEngineer [For Mix] – John HanesEngineer [Vocals] – Alex Oriet, Ben "Bengineer" Chang*Mixed By – Serban GheneaWritten-By – Harry Styles

Acoustic Guitar, Bass, Drum Programming, Drums, Electric Guitar, Instrumentation By [All Additional], Piano, Engineer, Producer, Producer [Vocals], Written-By – Ryan TedderEngineer – Tim ThomasEngineer [Mix, Assistant] – Ryan LipmanMixed By – Joe ZookProducer [Additional Vocals] – Jake GoslingWritten-By – Harry Styles, Liam Payne, Louis Tomlinson

Backing Vocals, Producer, Bass – Teddy GeigerBacking Vocals, Producer, Engineer, Producer [Vocals], Written-By – Julian BunettaBacking Vocals, Producer, Engineer, Producer [Vocals], Written-By, Drums, Guitar – John Ryan Engineer [Assistant] – Ian FranzinoEngineer [Mix, Assistant] – Ryan LipmanMixed By – Joe ZookWritten-By – Liam Payne, Louis Tomlinson, John Theodore Geiger*

Backing Vocals, Instruments [All], Producer, Written-By – Jamie ScottEngineer – Alex Oriet, Ben "Bengineer" Chang*, Sam Miller, Tom FullerEngineer [Mix, Assistant] – Ryan LipmanInstruments [All], Producer [Additional] – John Ryan Instruments [All], Producer, Written-By – Toby SmithMixed By – Joe ZookWritten-By – Liam Payne, Louis Tomlinson

Bass, Drums, Guitar, Keyboards, Percussion, Engineer, Producer, Written-By – Jacknife LeeEngineer – Matt Bishop Engineer [Vocal Recording] – Alex OrietMixed By – Mark "Spike" Stent*Mixed By [Assistant] – Geoff SwanPiano – Chris ThornberryStrings – Davide RossiWritten-By – Gary Lightbody, Harry Styles

Backing Vocals – Damon Bunetta, Daniel WeinerBacking Vocals, Engineer, Producer, Instruments [All], Written-By – Julian BunettaBacking Vocals, Engineer, Producer, Written-By – John Ryan Engineer [Assistant] – Ian FranzinoEngineer [Mix, Assistant] – Ryan LipmanMixed By – Joe ZookWritten-By – Ed Drewett, Liam Payne, Louis Tomlinson, Wayne Hector

Backing Vocals, Engineer, Instruments [All], Producer, Producer [Vocals], Written-By – John Ryan Engineer [Assistant] – Ian FranzinoEngineer, Instruments [All], Producer, Producer [Vocals], Written-By – Julian BunettaMixed By – Ash HowesRecorded By [Vocals] – Alex Oriet, Ben "Bengineer" Chang*Written-By – Liam Payne, Louis Tomlinson

Bass, Keyboards, Guitar, Mixed By, Producer, Written-By – Steve RobsonDrums – Eddie Thrower*Engineer – Sam MillerGuitar – Luke PotashnickWritten-By – Claude Kelly, Louis Tomlinson, Wayne Hector

Backing Vocals – Damon Bunetta, Peter BunettaBacking Vocals, Engineer [Assistant] – Ian FranzinoBacking Vocals, Engineer, Instruments [All], Producer, Producer [Vocals], Written-By – John Ryan , Julian BunettaBacking Vocals, Producer [Vocals], Written-By – Jamie ScottMixed By – Ash HowesRecorded By [Vocals] – Alex OrietWritten-By – Liam Payne, Louis Tomlinson

Backing Vocals, Instruments [All], Producer, Engineer – Matt Rad*Backing Vocals, Instruments [All], Producer, Engineer, Producer [Vocals], Written-By – John Ryan , Julian BunettaEngineer [Assistant] – Ian FranzinoWritten-By – Jamie Scott, Louis Tomlinson

Arranged By [Strings], Violin – Pete WhitfieldBass, Keyboards, Producer, Written-By – Steve RobsonCello – Dale Culliford, Nick Trygstad, Simon Turner Drums – Karl BrazilEngineer – Sam MillerEngineer [For Mix] – John HanesGuitar – Chris LeonardMixed By – Serban GheneaViolin – Alex Stemp, Paulette Bayley, Sarah Brandwood-SpencerWritten-By – Ed Drewett, Lindy Robbins