Thanks for the link I'll look into that. I did try a fix from Microcsoft to correct the problem with controlling what was downloaded via the Windows Update dialog box but that didn't correct the fault there.
Article on this problem here-
Microsoft Confirms KB2862330 Windows 7 Update Problems
with link within it to
Task sequence fails in Configuration Manager if software updates require multiple restarts
Are they referring to the system configuration manager? If I stop the process of configuration on start up then that would stop the updates installing? But what do I stop - Windows Installer?