If the buzzing stops when you touch the strings or any other metal part of the guitar then it's earthed and doing it's job.I'd be surprised if an Epi wasn't fitted with an earth wire.
My buzzing stops if I touch the pickups, selector switch surround, jack socket but NOT if I touch the strings, tailpiece or bridge.
Cheers for all the advice guys I really appreciate it and just hope I can get sorted next week as I have a gig on Saturday and really want to use the Les Paul.
Tim, I wish you lived in Newcastle then you could sort me out once and for all mate
By the way one of my best mates shared a bill with you last year I think ? he's called Billy Charlton, guitarist in Maiden England and Iron Maiden tribute from Newcastle.