Right...
I've tried the laptop physically wired to the switch with the cable I have running from the PC to the RJ45 socket (upstairs) and also the cable I use from the RJ45 socket downstrairs both times the laptop connects at 1000MPS.
I've also tried disabling the network connection and trying the second network connection on my mobo (it comes with two).
Hope that provides the answers your looking for if not I'm around all day so will be able to post fairly quickly
Thanks for your help chaps - much appreciated