Bloody hell Virgin, you don't make it easy for us HD cable customers, do you? Not only do you charge a premium for HD Filmflex movies (why?) and keep an ancient analogue network running, restricting newer services, but you hide what little HD content you have in the hardest to find places! Strewth...
Anyway, in addition to the programming listed under 'High Definition' in TV Choice on Demand, if you go to the A-Z listings for TV CoD you'll find the following HD programming:
Criminal Minds Season one episodes 1-4
Dogfight (two episodes - I think it's a National Geographic programme)
Engineering an Empire (three episodes - Nat Geo again)
Lost Season one 1 - 15
Mega Movers (three episodes, not sure which channel but suspect another NG one)
I haven't spotted any 4OD content apart from the later episodes of Brothers & Sisters (at 99p a pop) but I'll have a root around. Let me know if anyone out there spots some I've missed.