If I'm using the catch up option on my tivo box and it's a channel 5 program the only options I get are audio description catch up. This means you can't go to info and turn the audio description off. It is on both HD and normal.
What's going on? Why can't I get catch up with audio description?
All creatures great and small, neighbours, home and away, I'm guessing there are others. As I said the only option is that it is an audio description episode, you can not turn anything off. When you go into the menu you refer to it is already set to off and it states this is an audio description episode.
You don't get the AD options if using the My5 app, however if you go to Catch Up > Search and bring up My Creatures Great and Small then you can access the AD by pressing the info button and scroll down to the AD symbol and either turn it on or off.
I didn't check the other programs you mentioned.
The Service you do for others is the rent you pay for your room here on Earth - Muhammad Ali