[WillPS]

Well Teletext effectively committed suicide by  withdrawing what they agreed to provide, and Ofcom finished them off.

Hardly surprising really nobody else applied for the licence (I presume Ofcom did advertise it) and its been overtaken by the internet anyway these days.

Believe HDMI doesn't support the transfer of Teletext (as in "press text") and I dare like Sky and Virgin boxes and whatever else there is these days wouldn't relay it anyway if even it was transmitted (and supported by the cable).

Sky+HD boxes certainly supported Teletext still (via SCART/RF only though), it was the only way to get subtitles to work on some channels as recently as 6 or so years ago - TV5Monde for one.

I think Sky is a bit of an outlier in the UK in supporting Teletext over DVB. The BBC even produced a reduced version of Ceefax for a while for it.