We are currently engaged with many UK ISVs to help them take advantage of the great new features in Windows Vista and WinFX. These ISVs are normally companies well known to us. However - we have just agreed to open up our work to a broader set of UK ISVs. We have posted details at http://www.microsoft.com/uk/partner/partnering/isv/   - look for the section on the homepage entitled "One more reason to become Certified".