About Castell Iso-Lok

Castell Iso-lok manufactures and supplies life protecting 'Lockout Tagout' equipment to industry. With our vast range and key differ logging of padlocks we are committed to giving our customers quality products and the very best service.

Started as a family business Iso-lok was acquired 20 years ago by Castell Safety International Ltd. With the growing need for safety in industry Iso-lok soon became a pillar in Castell's family of brands it was renamed 'Castell Iso-lok.'

About Castell Safety International Ltd.

Castell Safety International was founded in 1922 by James Harry Castell who invented the trapped key interlock. Castell is a world brand in industrial safety and pride ourselves on our range of products, service, quality and ability to customise products to required specifications.

Castell Safety International Ltd and its brands are part of the Industrial Safety division of Halma PLC.

About Halma PLC

Halma PLC is a group which develops, makes and markets products that are used to protect lives, or improve the quality of life, for individuals and businesses worldwide.

Halma's three specialist business sectors are:

• Industrial Safety
  Protecting people and property at work.
• Infrastructure Sensors
  Detecting hazards and protecting people and property in buildings.
• Health and Analysis
  Improving public and personal health; protecting the environment.