Hello David,
What you have linked doesn't seem to be a stream. It won't play for me in Screamer.
There are some addresses at:
http://www.suppertime.co.uk/blogmywiki/2015/04/updated-list-of-bbc-network-radio-urls/
a sample of which seem to play in Screamer OK.
Give one of these a go !
Thanks Mark, I'll try a couple of those
Regards
david
David Howard