Our purpose is to keep people safe in the work place. We provide support through electrical safety testing, electrical measurement solutions and best practice guidance for electricians and service professionals.

About Us

Electrical safety is fundamental to us at Martindale, as leaders in Safe Isolation, we offer the most comprehensive range of electrical test equipment and educational aftersales support to meet your needs.

We are committed to developing, manufacturing and supplying the most trusted and reliable solutions while ensuring genuine value for money.

With over 90 years of experience, Martindale Electric is one of the most trusted brands in electrical safety testing with a reputation for providing innovative and time-saving electrical measurement solutions for electricians and service professionals backed up by a high standard of local service and support.

The company leads the way in safe isolation, providing simple and reliable solutions to ensure circuits have been de-energised and properly isolated prior to maintenance and modifications. Martindale electrical safety kits enable electricians and service personnel to stay safe by proving dead and locking off circuits during installation and maintenance, essential for compliance with Electricity at Work Regulations.

In addition to a market leading range of voltage testers, proving units, socket and continuity testers, Martindale Electric products include a comprehensive range of 18th Edition installation testers, PATs and electrical and environmental test tools.

Committment to Innovation

Safe Isolation

The definitive voltage indicator and proving unit together with unique locking off solutions

Socket testers

The original mains socket tester and the first advanced socket tester as defined by the HSE

Insulation testing

The first tester for hazardous environments

Loop testing

The first automatic non-trip, plug-in loop tester displaying all readings

Test tools

The first low cost fuse finder, self-proving voltage detectors

PAT testing

The smallest and lightest handheld PAT

Training & Support

Martindale Electric incorporates Metrohm® test equipment and Drummond Test lamps used by utilities and industrial customers during installation and maintenance of plant and equipment. The company provides full service, calibration and training from its Watford site.

training and support

Our brands

Martindale Electric incorporates Metrohm test equipment including 4kV AC and 5kV DC testers and Drummond Test lamps, high quality test leads and G clamps for Busbar connections.


Responsibility at Martindale

Keeping people safe is at the root of everything we do here at Martindale. We are led by the desire to keep people safe in the workplace and leave a positive impact on our world.

At Martindale, we have taken steps toward helping the environment with our packaging – we’ve made it recyclable, reusable and biodegradable and reduced the coverage and number of inks we use. We only use materials that are from sustainable and renewable sources.

While we are outside London, we are inside the M25, Euston station is approximately a 16 minute train journey. With this in mind, we pay a minimum of the London Living Wage.

Team & careers

Meet some of our team! As an expanding company, we offer a variety of career opportunities and take an active role in developing our people.


We ensure we meet government regulations, we work hard to make sure every Martindale product delivers the excellent quality and performance needed to keep people safe. We take active steps to ensure responsible actions are taken in each step of the process.

ISO Certificate  |  Liability Insurance Certificate  |  Anti-bribery and Corruption Policy


Martindale Electric - Keeping you safe.