Your browser is no longer supported

For the best possible experience using our website we recommend you upgrade to a newer version or another browser.

Your browser appears to have cookies disabled. For the best experience of this website, please enable cookies in your browser

We'll assume we have your consent to use cookies, for example so you won't need to log in each time you visit our site.
Learn more

in brief Thames Water

Thames Water has developed a new safety device for tunnel construction. Invented by Thames Water senior safety adviser Martin May, the Tunnel Stopper inflates in seconds to form an air bag 'plug' that prevents smoke filling the entire tunnel in the event of a fire. A sealable escape hatch allows workers and rescuers to reach safety.

Subscribe for full online access and get...

  • Full, instant access to all stories
  • Customised email alerts straight to your inbox
  • Monthly print magazine

Register for guest access to keep reading and get..

  • A free taste of other selected news stories
  • Daily email newsletters


Already have a subscription or ICE membership? or