I'd have loved that when I was at school.
Our BBC Micro network had a teletext receiver and you could view and print pages from it. I think it could download data from it, but I was there too late for Telesoftware. We had software to create pages but I don't think we could do anything with them except print.
Amazing back then in the late 80s that we had email and could send messages between computers, all on BBC Micro computers. So ahead of their time
It was a very nice little application. Produced by Colin Rowling Software. Don't know how many education boards used it. I used to have tonnes of teletext pages on 5 1/4 floppy discs. I stupidly dumped them all years ago, along with my BBC Micro. It was still in mint condition after 10 years. Madness. I still have my Archimedes 3010 though.
Based on the excerpt of the front page in the manual, here's what Mikefax's menu page may have looked like, in colour: