After trying all of the other suggestions in this and other threads this worked for me.
Uninstalled the management console and rebooted - Removed PXE and WDS and rebooted - installed WDS and rebooted - Initialised WDS and set the reminst path - Enable PXE on the DP. I also removed a customised boot image from some of the task sequences and used the default x64 one.
Thanks D3w4yne.