After working in IT for over 20 years and using everyone else's knowledge on the Internet in my daily life, I decided to make an effort and post some stuff back for other people to use.
I hope you find it useful
Delete temporary internet files on exit using Group Policy
Click Start - Run and type gpedit.msc
User Configuration\Administrative Templates\Windows Components\Internet Explorer\Internet Control Panel\Advanced Page\Empty Temporary Internet Files Folder when browser is closed
Set it to enabled and either gpupdate or reboot.