I thought it was very well done. I've always liked David Dimbleby and was surprised to see how open minded he was on the subject, given his many broadcasting roles on royal occasions. I wonder if there are any disagreements with his brother on this subject, because Jonathan Dimbleby is very in with the royals.
What I found surprising - and annoying - was the revelation that the royal family has, in effect, complete control over what film footage can be kept by the BBC - don't know if the same applies to other networks. It appears that David Dimbleby was also unaware of this - and was somewhat bemused by it.
The programme illustrated quite effectively that the media is being used as propagandists for the royal family, rather than just as conveyors of news. While it is probably inevitable that different sorts of bias occurs in news reporting, the extent to which it occurs in relation to this family is pretty damning, in my opinion. And, as was reported, there is also a huge PR machine in operation that directs and vets everything which relates to the royal family.
I am a republican but have to accept that many people are great fans of our monarchy (though the younger generations are definitely less enamoured). I certainly think that far too much money is paid to them for the upkeep of far too many homes. I definitely think the whole institution should be pared down, as it is in many other countries.