Need help with a British term

[Antares]

I'm in the middle of watching the Beatles Anthology and at one point, Paul mentions meeting a few "Hooray Henrys". What is the meaning of this term?

[DJ Doena]

http://www.phrases.org.uk/meanings/186300.html

http://en.wikipedia.org/wiki/Sloane_Ranger

http://www.urbandictionary.com/define.php?term=hooray%20henry

[Antares]

Thanks, I thought it was familiar to the Monty Python's upper class twit of the year sketch.