About Thomas White Limited

magnetic and reed switchesLocation

We are located centrally in the UK, near Leicester in the East Midlands.

Company History

We have been trading since 1904 and have been in continuous family ownership since then. In 1968 we designed and manufactured our first magnetic switch, a textile machine counter utilising a reed switch sensor. This eventually lead to the development of a range of magnetic switches that gradually broadened until, by the early 1980s over 90% of our products were magnetic switches or magnetic switch related. Since then we have developed whole ranges of highly innovative magnetic sensors for pneumatic cylinders and other, mainly industrial, applications.


We are currently supplying magnetic switches throughout Europe and the USA and to many other parts of the world including Australia, Canada, South Africa and South America.

Company Outlook

We offer a friendly, efficient and flexible service, providing innovation and excellence in the field of magnetic sensors and their associated products.


Call us now on
+44 (0) 116 240 4005



Magnetic switch manufacturer. Reed switch & electronic magnetic sensor designs for all magnetic switch applications. Large range of magnetic switches / reed switches & development of special magnetic sensors