ZED - guiding the world's TBMs since 1975Based west of London, UK, just 30 minutes from Heathrow Airport, ZED Tunnel Guidance specializes in the manufacture of advanced guidance systems for tunnel boring machines. The company's main strength is in its broad knowledge of the engineering principles involved in guiding a TBM along its predetermined route with unparalleled accuracy. This has resulted in an innovative, modular and highly reliable range of products for use in the toughest environments. Click here for more about ZED and its products.