A&R – Alex H.N.Gilbert
A&R [Co-ordination] – Conor O’Mahony, William Wortley
A&R [Co-ordination] [Assistant] – Storm YeeChong
Backing Band [Mariachi Group] – Erick Hernandez (4) (tracks: C1 to D5), Fernando Moreno (5) (tracks: C1 to D5), Joaquin Rodriguez (tracks: C1 to D5), Jorge Contreras (tracks: C1 to D5), José Hernández (2) (tracks: C1 to D5)
Bagpipes – Eric Rigler (tracks: C1 to D5)
Brass – Alan Kaplan (tracks: C1 to D5), Douglas Tornquist* (tracks: C1 to D5), Mark Adams (10) (tracks: C1 to D5), Salvadore Lozano* (tracks: C1 to D5)
Choir – The Cal Voce Singers (tracks: A1 to B5)
Design [Cover], Photography By – StormStudios
Engineer [Additional] – JP Reid, Steve Churchyard
Guitar [Additional] – Michael Vennart*
Keyboards [Additional], Programmed By – Ben Kaplan, Jamie Muhoberac
Lacquer Cut By – F.A.*
Management [Booking Agent North America] – Ron Opaleski
Management [Booking Agent Worldwide Expect North America] – Steve Zapp
Management [Co-management In North America] – Warren Entner
Management [Worldwide] – Dee Bahl, Jessica Lord, Paul Craig (2)
Mastered By – Ted Jensen
Mixed By – Mark ‚Spike‘ Stent* (tracks: B1), Ryan Williams (tracks: A1 to A5, B2 to D5)
Mixed By [Assistant] – Matty Green (2) (tracks: B1)
Music By – Biffy Clyro
Orchestra – Alyssa Park, Andrew Duckles, Charlie Bisharat, Gerardo Hilera, Mario De Leon*, Rudolph Stein*, Songa Lee, Steve Richards, Tammy Hatwan*, Tereza Stanislav
Orchestra [Contractor], Accordion – Suzie Katayama
Orchestrated By, Conductor – David Campbell
Pedal Steel Guitar – Greg Leisz (tracks: A1 to B5)
Percussion [Additional] – Matt Chamberlain (tracks: C1 to D5)
Performer – Ben Johnston (4), James Johnston (4), Simon Neil
Producer – Biffy Clyro, GGGarth
Producer [Additional] – Clint Mansell (tracks: A1, B3, D2), James Rushent (tracks: A1, B1, B2, D1)
Recorded By – Ben Kaplan, Ryan Williams
Recorded By [Assistant] – Chris Owens (2)
Songwriter, Lyrics By – Simon Neil
Tap Dance – Alyssa Suede (tracks: C1 to D5)
Technician [Studio] – Gordan Allison, Jerry Johnson (11), Nick Rowe
Vocals [Additional] – Benjamin Bridwell* (tracks: A4, D3)