BBC Audio Complaints
You can contact the BBC to complain about them not sending the Audio ON THE HD Channels out on Mpeg2 . Mgeg4 and instead only on AC3 on the below website link.
Tell them you have bought a HD satellite receiver and that you are forced to listen to the Audio Description and that it is driving you crazy , also please ensure you tell them you live in England and that your postcode is EN1 2RB or EN2 0AA or WS13 6JW or RH14 1EW or G15 6BS
Choose option 1 from the drop down list TV Programmes
https://www.bbc.co.uk/contact/complaints/make-a-complaint/#/Complaint