drums, percussion, backing vocals Louis Molino
guitar, guitar synthesizer [roland gr 300] Clive Wright
lead vocals, keyboards, bass Peter Kingsbery
lead vocals, synthesizer [casio] Anna Lacazio
management Jay Landers
photography by Dennis Keeley
producer Steve Hillage
written-by Peter Kingsbery
Record Company CBS Inc.
Distributed By CBS Records
Distributed By CBS Disques S.A.
Copyright (c) CBS Inc.
Pressed By CBS, Haarlem
Published By Edwin Ellis Music
Published By Nurk Twins Music
Phonographic Copyright (p) CBS Inc.
Made in Holland

On labels:
Taken From The CBS Lp:
COCK ROBIN CBS 26448

On back sleeve:
TAKEN FROM THE CBS LP COCK ROBIN (CBS 26448)

This entry is for release with title on front sleeve in black.
Release with title on front sleeve in white When Your Heart Is Weak
Release with title on front sleeve both black and white When Your Heart Is Weak
Release without title on front sleeve When Your Heart Is Weak
Label Code: LC -0149 (Labels)
Label Code: LC 0149 (Sleeve)
Price Code: CB 111
Rights Society: BIEM / STEMRA
Matrix / Runout: 01-006214-1 (Label A)
Matrix / Runout: 01-006214-2 (Label B)
Matrix / Runout: 01-6214-1A-1 (Runout A, etched, variant 1)
Matrix / Runout: 01-6214-1B-1 (Runout B, etched, variant 1)
Matrix / Runout: 01-6214-1A-1 A (Runout A, etched, variant 2)
Matrix / Runout: 01-6214-1B-1 A (Runout B, etched, variant 2)
Matrix / Runout: 01 - 6214 - 1A1 D (Runout A, etched, variant 3)
Matrix / Runout: 01 - 6214 - 1-B-1 C (Runout B, etched, variant 3)
Matrix / Runout: 01-6214-1A-1 E (Runout A, etched, variant 4)
Matrix / Runout: 01-6214-1B-1 E (Runout B, etched, variant 4)