He became a member of the Web Standards Project's DOM Scripting Task Force,[3] an invited expert on the W3C HTML Working Group and is an acknowledged commentator on W3C Document Object Model and JavaScript techniques.

Along with Jono Bacon, he was the longest-serving member of the team and often served to incite discussion about issues that more directly related to software freedom.

[5] Langridge was involved in the Shot of Jaq podcast, in collaboration with his former Lugradio co-host Jono Bacon.

[6] In January 2009 Langridge joined Canonical as a developer and left the company in 2013 to work as a freelancer for Kryogenix's consulting.

Langridge has written two books for technical publisher SitePoint, DHTML Utopia,[9] and Run Your Own Web Server Using Linux & Apache[10] (with Tony Steidler-Dennison) as well as writing the Stylish Scripting weblog[9] during 2005.