Mozilla Foundation (UK Office) Contact Number: 0207 855 3000

Call the Mozilla Foundation by dialling their UK office on the following contact number 0207 855 3000 to discuss job vacancies, volunteering opportunities, or for technical support for the Firefox web browser on either a desktop or mobile phone.


General Enquiries & Firefox Support – 0207 855 3000

Contact the Mozilla Foundation on the telephone number of their London office 0207 855 3000 for technical support with any of their software products. Specifically, the above helpline is useful for troubleshooting assistance with Mozilla Firefox, Thunderbird or Webmaker, whether you are using the desktop or mobile versions of the software. For example, you may be looking for assistance protecting your online privacy, or would like to ask how to manage preferences and add-ons. Firefox users may require tech support when fixing slowness, crashing and error messages. Alternatively, if videos, sound, pictures and animations don’t work on Mozilla Firefox then you may wish to discuss the necessary procedures to diagnose and fix said problems. You can also use this number to file a bug report or to to report issues with any sites not displaying properly in a Mozilla Firefox. Alternatively, you may have queries about installing the Firefox browser for a Windows, Mac or Linux computer. If you are interested in any career opportunities with the Mozilla Foundation then you can contact the London office to discuss both software engineer vacancies or volunteering opportunities for new graduates. Conversely, current students can call Mozilla to request information for an academic paper or for queries about using Mozilla’s trademarks.


Mozilla Foundation Call Costs

The Mozilla Foundation London office uses a local UK contact number, charging any callers no more than the standard per-minute of a typical geographic call made a landline or mobile. However, you may be able to contact Mozilla for free if you are calling from a landline with free calls to other landline numbers or have a mobile tariff that is bundled with inclusive minutes.