And for those of you that were glued to the Box to watch the Crown on Netflix - The BOAC aircraft seen in the episode of HM succession marked as registration G-ALDP (which was a Handley Page HP.81 Hermes 4A)
In reality, a South African DC-4 with registration ZS-AUB, c/n 42984 built in 1946 used in the series to depict BOAC's Argonaut Atatlanta.
One of two flying DC-4s operated by South African Airways Historic Flight, painted in a BOAC livery for the TV series, shot on location in RSA.
The CG aircraft, the DC4, was a special case. A real vintage DC4 exists in South Africa, which the production was able to paint in contemporary BOAC colours and use for filming on location there. During this time the SFX/CG Company had a chance to gather a large amount of reference photography that they used in conjunction with photogrammetry software to build and texture their CG model for more scenes.
Then they added further detail on a shot by shot basis.