Thanks for your help this procedure solved the problem on all my Windows 7 computers which failed to Update as per this community dialog.
Open Control Panel
Select System
Select Action Center Bottom LHS
Select Troubleshooting (Find and Fix problems)
Select System and Security
Select Fix problems with Windows Update
Run program and at the end it will give you an option to Open Windows Updates, select the choice and hey presto it will now show any Important Updates and Optional Updates pending, your computer is now back to normal and receiving Windows Updates.