VM Tech installed SG TCP Optimiser
http://www.speedguide.net/downloads.php and under general settings set the slider to 100+mbps and set "optimal settings".
Rebooted and now the dl is close to the 150mbps I should be getting.
However the ul speed dropped from a solid 10mbps to 4mbps.

---------- Post added at 15:43 ---------- Previous post was at 14:20 ----------
Another reboot and all is well (as far as speeds go)