1928 Hull got cable radio services, and Barbados in 1934 was first cable TV. However still interesting to see how it worked as where I lived cable was non existent.
TV or at least the ability to send pictures over telephone wires was invented by Alexander Bain 1810 - 1877, Abbé Giovanni Caselli's got it all working and so first cable TV around 1867, although this was slow scan TV not how we know it today. It really took off in USA to send the morning news paper, if printed on paper is was called a fax, but if on a cathode ray tube slow scan TV, but were really the same thing.
Morse code was around the same time as fax, there is some debate at which was invented first, but both send digital information. This makes it hard to say when digital TV arrived as it was to start with digital.
I remember receiving and sending pictures to my son back in around 1993 we both had I suppose email addresses and used 7 plus and packet radio to send them, Suffolk to North Wales. He got his licence at 16 year old I think, well at least before he left school. We used Amiga A1200 to send to each other so know they had only just been released so that's how I know date. We used a program called Amicom. Packet radio started 1978 I did not have a licence then, but remember on the Falklands a school teacher showing me it working so around 1985, not sure if packet or slow scan TV, or RTTY or Amtor.
Seems unbelievable it was so slow, send a message to USA and you could get up and make a cup of tea while waiting for the reply. There was a system called Clive which was like the internet having loads of useful info stored.
But that film with turret tuners really takes me back, not sure when we got first TV, remember two channels so must have been after 1955, I remember BBC 2 starting so that was 1964, 1982 was channel 4, and in 1997 they came around retuning TV's to squeeze in Channel 5. By that time we had Sky, think that was 1990 remember the square aerial?