Google Technology User Group is a user group for developers who are interested in Google developer technology like Google Web Toolkit, Android, App Engine, or Google APIs such as AJAX API, YouTube API etc. You can find the complete list at http://code.google.com. The purpose of this user group is give the developers in UK, who use Google technology, an opportunity to meet and learn (or teach) something new.
Events or meetups will be mostly held in or near London.
GTUG is a user group with an interest in Google technology and content from this group is entirely independent from Google, the corporation.