Credits
- Recorded: Ronnie Lane's Mobile Studio at Langley Farm, Devon.
- Produced: Robert Calvert and Dave Brock. Engineered by Dennis Smith, Neil Fawcus and Neil Mount.
- Mixed at Wessex Studios, London. Engineered by Tim Friese-Greene and Mike Shipley.
- Sleeve by Barney Bubbles and Brian Griffith.
- CD 1 tracks 9-10: A & B sides of "Psi Power" single, released as Charisma CB323 in October 1978
- CD 1 track 11: A-side of "25 Years" single, released as Charisma CB332 in May 1979
- CD 2 tracks 1-5: Sonic Assassins: Recorded at the Queens Hall, Barnstaple on 23 December 1977
- CD 2 tracks 6-15: Unreleased session tapes: Recorded at Langley Farm, Devon between June and August 1978
Read more about this topic: Psi Power