Alto Saxophone, Baritone Saxophone – Simon Clarke Arranged By [Brass] – Simon Clarke , TMS , Tim SandersArranged By [Vocals], Backing Vocals – Carmen Reece, Iain James*Brass – Kick Horns*Keyboards – Peter KelleherMixed By – Serban GheneaProducer – TMS Producer [Additional] – James F Reynolds*Programmed By [Additional] – MNEKTenor Saxophone – Tim SandersTrombone – David Liddell*Trumpet – Darren Wiles, Ryan QuigleyWritten-By – Ben Kohn, Erika Nuri, Heidi Rojas, Iain James*, Jade Thirlwall, Jesy Nelson, Leigh-Anne Pinnock, Michelle Lewis, Mischke, Perrie Edwards, Peter Kelleher, Thomas Barnes

Engineer [Vocals, Additional] – Ben Collier, Daniel Aslet*Mixed By – Serban GheneaProducer – TMS Written-By – Ben Kohn, Iain James*, Jade Thirlwall, Jesy Nelson, Leigh-Anne Pinnock, Perrie Edwards, Peter Kelleher, Thomas Barnes

Mixed By – Serban GheneaProducer – Richard "Biff" Stannard*, Tim PowellWritten-By – Ash Howes, Jade Thirlwall, Jesy Nelson, Leigh-Anne Pinnock, Perrie Edwards, Richard "Biff" Stannard*, Tim Powell

Engineer [Vocals] – Philippe-Marc AnquetilInstruments [All], Recorded By [Instruments] – Dapo TorimiroMixed By – DAPO*, Philippe-Marc AnquetilProducer – DAPO*, Ester DeanProducer [Vocals] – Ester Dean, Iain James*, Philippe-Marc AnquetilWritten-By – Dapo Torimiro, Ester Dean

Engineer [Vocals, Additional] – Ben CollierKeyboards – Ben KohnMixed By – Serban GheneaProducer – TMS Written-By – Ben Kohn, Iain James*, Peter Kelleher, Thomas Barnes

Guitar – Luke FittonKeyboards, Programmed By – Andy Robinson, Ben Taylor , Brian Higgins, Josh Jenkin*, Luke Fitton, Matt Gray, Miranda Cooper, Toby ScottMixed By – Jeremy WheatleyProducer – Brian Higgins, XenomaniaRecorded By [Assistant Engineer] – Shea StedfordRecorded By [Engineer] – Ben Taylor , Toby ScottWritten-By – Brian Higgins, Jade Thirlwall, Jesy Nelson, Leigh-Anne Pinnock, Luke Fitton, Miranda Cooper, Perrie Edwards

Arranged By [Strings], Piano, Producer – Steve Mac Mixed By – Chris LawsWritten-By – Priscilla Renea, Steve Mac

Backing Vocals [Additional] – Carmen ReeceDrums, Mixed By – Chris LawsGuitar – Paul GendlerKeyboards, Producer, Synth – Steve Mac Written-By – Ina Wroldsen, Steve Mac , Wayne Hector

Bass – Michael Hamilton Featuring [Rap] – Slick RickGuitar – Darren Lewis, Jacob QuistgaardInstruments [All Other] – Darren LewisMixed By – Phil TanProducer – Future CutWritten-By – Ben Volpeliere-Pierrot, Darren Lewis, Glenn Francis Skinner*, Iyiola Babalola, Jade Thirlwall, James Stanley Carter*, Jesy Nelson, Julian Godfrey Brookhouse, Leigh-Anne Pinnock, Miguel Drummond*, Nicholas Bernard Thorp*, Perrie Edwards, Shaznay Lewis

Engineer – Tyson KuteyiFeaturing [Rap] – T-BozGuitar – Brett FarkasMixed By – Phil TanPiano, Producer, Recorded By – Jon LevineWritten-By – Autumn Rowe, Jon Levine, Tionne "T-Boz" Watkins*

Bass, Guitar – Ben EpsteinKeyboards, Percussion, Producer – Fred BallMixed By – James F Reynolds*Written-By – Fred Ball, Iain James*, Jade Thirlwall, Jesy Nelson, Leigh-Anne Pinnock, Nicola Roberts, Perrie Edwards

Drums, Keyboards [All], Programmed By – Rocky Morris, Rufio SandilandsMixed By – James F Reynolds*Producer – Pegasus Written-By – Iain James*, Jade Thirlwall, Jesy Nelson, Leigh-Anne Pinnock, Perrie Edwards, Rocky Morris, Rufio Sandilands

Mixed By – Matt FurmidgeProducer – Matt Furmidge, Paul MeehanWritten-By – Alessandro Benassi*, Leigh-Anne Pinnock, Paul Meehan, Tim Woodcock

Bass – Ben KohnEngineer [Vocals] – Philippe-Marc Anquetil, TMS Guitar – Sam KlempnerMixed By – Phil TanProducer – TMS Written-By – Ben Kohn, Iain James*, Peter Kelleher, Philippe-Marc Anquetil, Thomas Barnes

Guitar – Robbie LamondInstruments [All Other] – Darren Lewis, Iyiola BabalolaMixed By – James F Reynolds*Producer – Future Cut, Robbie LamondWritten-By – Cathy Dennis, Darren Lewis, Iyiola Babalola, Jade Thirlwall, Jesy Nelson, Leigh-Anne Pinnock, Perrie Edwards, Robbie Lamond

Arranged By [Strings], Conductor – Cliff MastersonArranged By [Vocals] – Maegan CottoneEngineer [Assistant] – Aaron Ahmad, Liam NolanEngineer, Recorded By – Dan Parry*, Sam WheatLeader – Marianne Hayes*Mixed By – Dan Parry*Piano – Luke JubyWritten-By – Ben Kohn, Iain James*, Jade Thirlwall, Jesy Nelson, Leigh-Anne Pinnock, Perrie Edwards, Peter Kelleher, Thomas Barnes