I was sure I had a trojan or spyware causing this problem, however after cleaning the PC and applying updates using a search of \”Windows Update\”\”, but \”windows Update\” and the other links below still failed
I changed the MTU value in my modem/router from 1492 to 1458 (my provider is Zen)
Now all the websites work correctly
List of sites
HM Revenue and Customs
http://www.hmrc.gov.uk/inheritancetax/iht-probate-forms/find-right-forms.htm
Forms failing to download
Ebay
http://www.ebay.co.uk
Pictures failing to display
Windows Update
When using tools –> Windows Update I was getting \”Page not found\”