Acoustic Guitar, Arranged By, Backing Vocals, Drums, Engineer, Piano, Producer, Producer [Vocals], Programmed By, Written-By – Ryan TedderCello – Brent KutzleEngineer – Craig Durrance, Joe Zook, Noel ZancanellaEngineer [Additional] – Damien LewisEngineer [Assistant] – Chris Kasych, Nicolas Essig, Richard WoodcraftMixed By – Phil TanProducer [Vocals], Written-By – Leona LewisWritten-By – E. Kidd Bogart*

Backing Vocals [Additional] – Vicky Sandström*Engineer [Additional] – Damien LewisGuitar [All] – Esbjörn Ohrwall*Mixed By – Phil TanProducer [Vocals] – Leona LewisProducer [Vocals], Written-By – Arnthor BirgissonProducer, Recorded By – Arnthor*Written-By – Max Martin, Savan Kotecha

Backing Vocals – Che'NelleCo-producer, Producer [Vocals] – Harvey Mason, Jr.*Coordinator [Production Coordination] – Angela N. GolightlyEngineer – John HanesEngineer [Assistant] – Tim RobertsInstruments – Frenchie Instruments, Producer – Vein Mixed By – Serban GheneaProducer – Uriel "Frenchie" Kadouch*Producer [Vocals], Written-By – Leona LewisRecorded By [Additional Vocals] – Dabling HarwardRecorded By [Vocals, Assistant] – David Boyd , Michael DaleyRecorded By [Vocals] – Andrew HeyWritten-By – Cheryline Lim, Gravriel Aminov, Keith Ross , Lundon J. Knighten*, Michael Malih, Uriel Kadouch

Bass, Drums, Engineer, Guitar, Producer, Producer [Vocals], Written-By – Julian BunettaEngineer [Additional] – Damien LewisGuitar, Keyboards, Piano, Producer, Producer [Vocals], Written-By – Andrew FramptonMixed By – Phil TanProducer [Vocals], Written-By – Leona LewisStrings – Christine WuWritten-By – Savan Kotecha

Engineer [Pro-Tools, Assistant] – Tim RobertsEngineer [Pro-Tools] – John HanesMixed By – Serban GheneaProducer, Written-By – Max Martin, Shellback Recorded By – Ann MincieliRecorded By [Assistant] – Christian BakerWritten-By – Savan Kotecha

Arranged By [Choir], Other [Choir Organised By] – Lawrence JohnsonArranged By [Strings], Conductor [Strings] – Stephen HusseyBacking Vocals [Additional] – Stephen SimmondsEngineer [Strings], Recorded By [Strings] – Rich Cooper*Guitar [All] – Esbjörn Ohrwall*Leader [Strings] – Simon FischerMixed By – Manny MarroquinMixed By [Assistant] – Christian Plata, Erik MadridProducer – Arnthor*Producer [Vocals] – Leona LewisProducer [Vocals], Written-By – Arnthor BirgissonRecorded By – Seth WaldmannRecorded By [Choir] – Neil TuckerStrings – Urban Soul OrchestraWritten-By – Ina Wroldsen

Edited By [Digital] – Ron TaylorEngineer – John HanesEngineer [Assistant] – Tim RobertsInstruments, Producer, Producer [Vocals] – Kevin RudolfMixed By – Serban GheneaProducer [Vocals] – Leona LewisRecorded By – Joshua Berkman, Seth Waldman*Written-By – J. Kasher*, K. Rudolf*

Bass, Guitar, Keyboards, Producer, Producer [Vocals], Written-By – John ShanksContractor, Coordinator [Production Coordination] – Shari SutcliffeDrums – Vinnie ColaiutaEdited By [Pro-Tools] – Lars FoxEngineer [Additional] – Alex Gibson Engineer [Assistant] – Keith Armstrong, Nik Karpen, Paul LaMalfa*Engineer, Programmed By – Jeff RothschildKeyboards – Charles JudgeMixed By – Chris Lord-AlgeMixed By [Additional] – Andrew Schubert, Brad TownsendProducer [Vocals], Written-By – Leona LewisProgrammed By – Dan ChaseWritten-By – A. "Novel" Stevenson*

Edited By [Pro-Tools, Assistant] – Tim RobertsEdited By [Pro-Tools] – John HanesInstruments, Producer, Recorded By – Shellback Mixed By – Serban GheneaProducer [Vocals], Written-By – Leona LewisProducer, Producer [Vocals], Recorded By, Written-By – Kristian LundinWritten-By – Savan Kotecha

Arranged By [Choir] – Lawrence JohnsonArranged By [Strings] – Will Malone*Backing Vocals – Beverley Skeet*, Sara-Jane Skeet*Bass – John GarrisonDrums – Karl BrazilEngineer – Richard FlackEngineer [Vocals] – Seth WaldmannGuitar – Luke PotashnickMixed By – Jeremy WheatleyPiano, Producer, Producer [Vocals] – Steve RobsonProducer [Vocals] – Leona LewisStrings – The London Session OrchestraWritten-By – Noel Gallagher

Arranged By [Strings] – Larry GoldCo-producer – Mike ElizondoMixed By – Jean-Marie HorvatMixed By [Assistant] – Mimi Parker*Producer – The Y'sProducer [Vocals] – Justin TimberlakeProducer [Vocals], Written-By – Leona LewisRecorded By – Paul FoleyWritten-By – J. Fauntleroy*, J. Timberlake*, M. Elizondo*, R. Tadross*

Bass, Guitar, Keyboards, Producer, Producer [Vocals], Written-By – John ShanksContractor, Coordinator [Production Coordination] – Shari SutcliffeDrums – Vinnie ColaiutaEdited By [Pro-Tools] – Lars FoxEngineer [Assistant] – Keith Armstrong, Nik Karpen, Paul LaMalfa*Engineer, Programmed By – Jeff RothschildKeyboards – Charles JudgeMixed By – Chris Lord-AlgeMixed By [Additional] – Andrew Schubert, Brad TownsendProducer [Vocals], Written-By – Leona LewisWritten-By – Danielle Brisebois

Arranged By, Backing Vocals, Bass, Drum Programming, Instrumentation By [All Other], Producer, Producer [Vocals], Synth, Written-By – Ryan TedderArranged By, Co-producer, Piano, Written-By – Dan MuckalaBass, Cello, Co-producer, Instrumentation By [All Other], Synth – Brent KutzleCo-producer, Drum Programming, Engineer – Noel ZancanellaDrums – Eddie Fisher Engineer [Additional] – Damien LewisFeaturing – OneRepublicMixed By – Phil TanProducer [Vocals], Written-By – Leona LewisWritten-By – Jess Cates, Lindy Robbins

Arranged By, Backing Vocals, Drums, Engineer, Mellotron, Piano, Producer, Producer [Vocals], Programmed By [Strings], Tambourine, Written-By – Ryan TedderCello – Brent KutzleEngineer – Noel ZancanellaEngineer [Additional] – Damien LewisEngineer [Assistant] – Sam OkellMixed By – Phil TanProducer [Vocals], Written-By – Leona Lewis

Bass, Guitar, Keyboards, Producer, Producer [Vocals], Written-By – John ShanksContractor, Coordinator [Production Coordination] – Shari SutcliffeDrums – Vinnie ColaiutaEdited By [Pro-Tools] – Lars FoxEngineer [Assistant] – Paul LaMalfa*Engineer, Mixed By, Programmed By – Jeff RothschildKeyboards – Charles JudgeProducer [Vocals], Written-By – Leona LewisProgrammed By – Dan ChaseWritten-By – Danielle Brisebois

Engineer [Additional] – Damien LewisInstruments, Producer, Written-By – Jeff BhaskerMixed By – Phil TanProducer, Written-By – Leona LewisRecorded By – Ann Mincieli, Seth Waldmann

Drum Programming, Keyboards, Producer [Additional], Remix – Jason NevinsWritten-By – E. Kidd Bogart*, Leona Lewis, Ryan Tedder