Besson & Robinson founded to manufacture electro-mechanical relays (who quickly became known as B&R).

Moved to purpose built factory in Harlow, B&R flourished, becoming a major supplier of co-axial relays to the aircraft industry with products used in Concorde, Hawker Hunter and the Vickers Viscount.

Moved into the manufacture of control gear and contactors, workforce expanded to over 300.

Developed the first plug-in ELCB (Earth Leakage Circuit Breaker) for Watney Mann brewers.

Developed the world's first RCD plug, marketed under the PowerBreaker name.

Featured on BBC Tomorrow's World.

B&R changed their name to Powerbreaker.

Acquired Norslo with their extensive range of conduit fittings.

Acquired the lighting and ventilation business of RDL

Greenbrook invests in new extended laboratory facility.

Greenbrook expands size of sales force.

Relaunched three brands (Powerbreaker, Norslo and Kingshield Lighting).

Introduced Ladder & Tool range under brand of ToolShield.

Celebrated 40 years of Powerbreaker and launched industry leading 10mA RCD.

Introduced Powerbreaker ProteKt range of weatherproof accessories.

Introduced Orion Range of Occupancy Detectors.

First manufacturer to offer Type A RCD.

New website with e-commerce facility and live stock information.

Became UK distributor for Tillex Fastenings.

Became UK distributor for MK Sentry Consumer Units.

New Greenbrook branding project.