It sort of exists
It's called TV with Audio description. Channel 851 upwards on Virgin cable.
(
Tribs 🦇 ↓ dn ʎɐʍ sᴉɥʇ ↓🦇,
Tue 3 Feb 2009, 17:57,
archived)
As opposed to BBC TV
which is television for the bland
(
Ptolemy the man with the silent pea,
Tue 3 Feb 2009, 17:58,
archived)
or channel 5
television for the blonde
(
sock more tea vicar?,
Tue 3 Feb 2009, 17:59,
archived)