- Rob Overseer - Production, engineering, mixing, additional instrumentation, and artwork
- Dave Creffield - Production, engineering, mixing, and string arrangements
- Zak Speakerfreak - Vocals on Slayed and Stompbox
- Chris Live - Vocals on Velocity Shift, Doomsday, and Basstrap
- Nick Life - Vocals on Horndog
- Sandra Pehrsson - Vocals on Meteorology
- Andrew Montgomery - Vocals on Aquaplane
- Rachael Gray - Vocals on Sparks
- Jakk Frost - Rap on Never
- Vicky - Vocals on Never
- Ricky Wilson - Mofo's on Never
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- Brian Perkins - Spoken Word on Heligoland
- Ruth Boswell - Cello on Meteorology, Never, and Heligoland
- Rebekah Allan - Violin on Meteorology, Never, and Heligoland
- Alice Laing - Violin on Never
- Emesto Estruch - Violin on Meteorology and Heligoland
- Michael Whittaker - Viola on Never
- Paul Jones - Piano on Meteorology and Sparks
- Chris Blair - Mastering
- Cally - Artwork and photography
- Geoff Johnston - Artwork
- Jill Strong - Photography
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