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RELIANCE HIGH-TECH LIMITED

BARRY BROS (SECURITY DEVICES)

TIMEGUARD LIMITED

MATRIX SECURITY & ELECTRICAL SYSTEMS LTD

WEST LONDON SECURITY

SIEMENS BUILDING TECHNOLOGIES SECURITY SYSTEMS LTD

BRAMAH SECURITY EQUIPMENT LIMITED

EUROPEAN SAFETY SYSTEMS LTD

THORN SECURITY LTD

S.D.S. SECURITY LTD

C.A.S. AUTOLARM LTD

SIGHT FORCE LIMITED

THORN SECURITY INTERNATIONAL LIMITED

FCF (SERVICES) LIMITED

TITAN FIRE & SECURITY LTD

TIMMS ELECTRICS

FIRETECNICS SYSTEMS LTD

LONDON CITY FIRE GROUP

T G PRODUCTS LTD

TITAN FIRE ALARM SERVICES LTD