Transformers & Rectifiers Ltd. is an independent British engineering company and globally recognised specialist in the design, manufacture, and maintenance of liquid-filled and dry-type transformers, as well as transformer rectifiers. With over 75 years of experience, the company has developed an exceptional depth of technical knowledge, manufacturing capability, and application expertise.

Operating from state-of-the-art facilities in Guildford, Surrey, T&R delivers one of the most comprehensive transformer and rectifier ranges available worldwide. Its in-house design, manufacturing, and testing capabilities enable the development of highly engineered, bespoke solutions tailored to demanding operational requirements. Serving sectors including defence, rail, infrastructure, and heavy industry, T&R supports critical applications where reliability, safety, and performance are paramount. In certain safety-critical markets, such as the UK railway industry, the company holds sole approved supplier status.

Complementing the transformer division, T&R Test Equipment Ltd. provides advanced electrical testing and measurement solutions. With a strong focus on quality, innovation, and customer support, the company supplies precision test equipment to organisations ranging from multinational corporations to specialist engineering firms, enhancing safety, performance, and efficiency across power systems worldwide.

Together, the T&R group combines engineering heritage with modern innovation to deliver dependable, high-performance solutions to a global customer base