Our IPTV package does not currently include radio channels - a shame - however I have found how to add in our own channels. I've created an additional playlist with 3 more categories, BBC Radio, Regional BBC Radio and Misc Radio.
If you would like the channels loading onto your subscription - contact me via. this forum (this only works on the Smart IPTV app) with your name and I'll check to see if you are currently viewing - if you are I can upload the new channels.
If you would like any channels adding, I found a good list here:
which I can use easily to add the channel(s).