Fortress designs and manufactures customised safety equipment, protecting lives in hazardous workplaces. Our reputation is as a global provider of robust safety specifications for manufacturing environments. Why Interlocks? Interlocking is a method of controlling two or more interdependent operations which must take place in a predetermined sequence, if necessary remotely controlled or time delayed. The need for this sequence may be safety to personnel and equipment, or it may be to control processes and productivity. Over the last 40 years, Fortress has become well known in the industry for innovative design, robust engineering and reliability. Headquarters are in Wolverhampton (UK), with supporting offices and manufacturing facilities in the USA, Netherlands, Australia and China, further supported by a global network of trusted distributors and channel partners. Fortress is a subsidiary of Halma plc. Halma is an international group of companies that make products for hazard detection, life protection, personal and public health improvement and environmental protection. Halma has nearly 50 businesses in 23 countries and major operations in Europe, the USA and Asia. It is a FTSE 100 company quoted on the London Stock Exchange.