Ally Pally

[Mike Watterson]

With so many to choose from I would promote A.A. Campbell-Swinton.

Absolutely, he probably was the first to outline an entirely electronic system. Experts back then knew the electronic camera was the biggest difficulty.
UK promotes Baird just as USA promotes Farnsworth, perhaps more patriotic than acknowledging three Russians. Though unlike Baird, Farnsworth was a real scientist, engineer and diverse inventor.
Interestingly Marconi didn't want a Nobel because he said himself he was an entrepreneur improving the inventions and discoveries of real scientists. More modest than Edison who claimed to invent all kinds of things he didn't.

Certainly RCA dominated Radio and TV and Marconi was one of the original founders before the US kicked him out of it for being Foreign, which was long before his unfortunate support for Fascism. EMI was born out of HMV (founded by Victor, later acquired by RCA) and got the rights to Marconi name for domestic radios. So no surprise the close collaboration of RCA and EMI on cameras in 1930s and Marconi transmitters.

Almost everything is built on the work of others. Einstein published theory of the Photo Electric effect, needed for Cameras and esp. today's CCDs. He acknowledged that Maxwell almost had the the idea of Relativity as Maxwell's equations showed that the EM waves speed in a Vacuum was a constant.