Regarding Teletext TV, we used to rent a tv from Radio Rentals back in the 70's and 80's, possibly even into the early 90's, because we couldn't afford to buy a TV outright and any repair bills.
One advantage, except free repairs, they always had new technology to try and never cost anything more than 50p a week or so more. So like we had a video recorder very early on, we had a teletext tv in the very late 70's or early 80's.
Me and my brother even pre teenage years, thought it was well cool and even used to watch for the updates to FSTE index lol. Later it was for the football, waiting for the half times to come through etc, or the update page notification coming up when a goal went in.
I had a TV card for the PC up until the early 2000's as well for the telextet, being able to have multiple pages of latest footy scores open at the same time, was the best way to keep up, as I didn't have Sky and Soccer Saturday to watch. Used it until the BBC etc...started to have vidiprinters on the web.