Bingowings said:

I would be fascinated to see it.

I'm pretty sure we got the wrong 2hrs.

I've never seen any stills or productions shots of the filming at Hever Castle so maybe that's in there but maybe they only intended to film some architectural elements (like stairs for Naboo) there???

Hever Castle gardens are somewhat reminiscent of those deleted scenes from AOTC where Anakin meets Padme's family. That would be an interesting inclusion. Or an extended sequence where Qui-gon et al would sneak around trying to get to the main hangar in order to escape Naboo. But more likely it would have been used for elements.

JEDIT: Found this image of the castle grounds, looks mighty familiar to the look of Naboo: