• BSI Quality Assurance -BS EN ISO 9002 : 1994 Certificate Number FM 33820
• AP Precision Hydraulics (Bolton) Ltd.
• AP Precision Hydraulics (Runcorn) Ltd.
• Atomic Energy Authority
• British Aerospace British Nuclear Fuels G.E.C.
• Alsthom Giddings & Lewis Ltd.
• Joy Mining Machinery
• Lucas Aerospace Ltd. (Birmingham)
• Lucas Aerospace Ltd. (Burnley)
• Royal Ordnance Plc. (Nottingham)
• Slingsby Engineering Ltd.
• Vickers Shipbuilders & Engineering Ltd.