A report by the BBC - and nice image
(The video clip isn't as good as others elsewhere!)
http://news.bbc.co.uk/onthisday/hi/dates/stories/september/20/newsid_3075000/3075555.stmSource: BBC News
Media Type: Video
Description: "On this Day 20 September 1967 QE2 takes to the waves" The video footage shows the spectators who had gathered to see the launch of the Q4. The Queen accompanied by Prince Phillip and Princess Margaret at John Brown's Clydebank, names and launches the ship.