[Frances]

I doubt HK broadcasters will produce their own documentary… Maybe TVB will show a special made by a UK broadcaster? Based on what they provided for GE2019 and Prince Philip’s obit, I guess it will be Sky News.

Yep, all imports - HK broadcasters aren't known for giving the world more Attenboroughs, especially in English!

Found one with the same name on Sky NZ, but having the same thumbnail as the UK one, I think we can safely say it's from Sky. Possibly the same one too with different dubs on both channels.
[EDIT] It is from Sky News, albeit not in the current symbol at the end credits. 

Quite a prompt purchase, given Pearl's habit of reruning the same old film franchises to death!

It seems like Sky made a prepared overseas version of the obit documentary. The one shown on Sky Go NZ and TVB was different from what’s aired on Sky News in UK.

Just finished this overseas version - can’t believe there were not Platinum Jubilee related content.

Well previously I remember TVB always import royal programme from the BBC - since a huge budget cut came to Pearl and all of these were handed to the news department and then they were placed by Sky shows.