It might be time to give a little context.
Read this.
https://crgis.ndc.nasa.gov/crgis/images/c/ca/PEN00067.pdf
You'll see that aircraft designers in the 1940's percieved higher aircraft speeds for trans sonic and hyper sonic aircraft than we have been able to acheive
Exhibits of this analysis in the UK producesd a series on jet aircraft designs that placed power units inside a wing that was also designed for low wing loading, aerodynamic effiency (definitely not well understood then at supersonic speeds).
Examples include the V Bombers- Valiant. Victor and Vulcan.
The Comet (second DH aircraft to bear the name) was another.
I lived summers in the UK from about 1960 to 1965. My father was an aircraft engineer who evaluated Caravelle and Concorde for the US market.
Caravelle was an early attempt cross-channel between SNACE which became Sud Aviation and De Havilland which was absorbed into BAC to develop the first mid range jet civilian transport in scale.
Caravelle used the flight deck of the Comet, but was powered by RR Avons, axial flow turboets.
Comet used centrifugal flow DH Ghost jets initially and Avons later. There is alot to besaid about the pluses and minuses of et turbines buriied in the wing. My only observation is that when the UK was advancing jet aircraft design, speeds were goals that later became harder to obtain above the Mach 1 threshold and depended on more that wind tunnel testing.