Mains Avoidance Service

The Linesearch service, before U dig, is available for local authorities, highway authorities and utility statutory undertakers to request the location of company apparatus buried underground in public highways and private streets.

To request this information, please email our GIS team at with the contact details of the individual and company requesting access. We will share our terms and conditions for the use of the service, which you must read and accept before we grant you access. We will then issue usernames and passwords to  authorised users.

If you have any questions or comments about this service, please email the GIS team on

For customers requiring information about pipework within property boundaries, please email the Customer Services Team at



Log in to use our online service

Click the icon above to log into our Mains Avoidance Service. The system will open in a new tab in your web browser.