It's a pain to go searching for download links for Microsoft Windows and Office products so here's a compilation of direct download links to the official ISO downloads.
All products linked are English language versions.
Windows 7 Home Premium with SP1 (x86 / x64)
Windows 7 Professional with SP1 (x86 / x64)
Windows 7 Ultimate with SP1 (x86 / x64)
Windows 8 RTM trial (x86 / x64)
Microsoft Office 2010 (x86 / x64)
Microsoft Office 2010 Standard (x86 / x64)
Microsoft Office 2010 Professional Plus (x86 / x64)
Note: Office 2010 includes Home and Student, Home and Business and Professional versions. The installed (and activated version) depends on your product key. All Office 2010 downloads are retail versions.
Microsoft Office 2013 Professional Plus (x86 / x64)
You'll of course need valid Product Keys to activate these.
8th June 2014 - updated Office 2013 download links.
23rd August 2014 - added Windows 8 download links.