@evildictaitor:In Hong Kong, it seems they have to draft the requirement according to whatever said in their guideline for Interoperability Framework (HTML being part of the standard). So it seems we need to know how often do they update "the standard" in UK. In Hong Kong it's reviewed under 6-12 months interval, but how "not updated" it is at the completion of the project would be dependent on the length of the project.
Considering Win7 is the next OS the commonly think as "valid and safe" replacement for WinXP, projects started procurement process before 2010 can be pretty sure still has requirement topped at WinXP+IE8.
Btw, when doing government works, you play by the rules, not common sense.