Thanks for the help guys, I disconnected the WAN on the router and powered off for 40 mins (whilst leaving the HG612 alone) whilst this increased the profile to 28.04mbps on the BT Wholesale speed checker, plusnets profile did not move from 25mbps, in the end I had to contact them to ask them to resync my profile, which they have now done and the speeds on speed checkers seem to be around 27mbps.