No - the essex accent is a lot less posh than the valley girl. I think estuary (sp?) english is more akin to the valley girl idiom.
but it's hard to really make a comparison between accents in a british context and those in an american, as accents are FAR more important in the UK.
― Robbie Lumsden (Wallace Stevens HQ), Monday, 12 April 2004 15:49 (twenty-one years ago)