Just to rub it in, I've got some caps of the old Interactive services posted on YouTube:
BB2:
http://www.youtube.com/watch?v=Dndy_1NOza4
BB3:
http://www.youtube.com/watch?v=Xb3VJH-mebU
CBB2:
http://www.youtube.com/watch?v=eOrQNquyYs8
BB4 Sky:
http://www.youtube.com/watch?v=G-DqybBKrTM
BB4 Telewest:
http://www.youtube.com/watch?v=wSm31ai-Nak
Even if they just incorporated the Teletext on 4 service into the stream would be an improvement.