Japanese online radio stations?

Ohayoo,
Here in the UK we have BBC radio 4, which my wife (who is Japanese) has been listening to now for about 15 years, her English is better than mine and that has a lot to do with radio 4 - it is a 24-hour station playing discussion programs, news, current affairs, documentaries and drama - I recommend it to all foreigners I meet here who are trying to improve their English!
We are going to move to Japan permanently when my Japanese language skills are good enough - as well as studying from textbooks and workbooks I am watching a lot of Japanese movies and listening to J-pop, but to help me achieve better language skills and supplement my study program I am looking for a Japanese equivalent of BBC Radio 4 - if anyone here has a link to a website offering online listening for this kind of service please add it here.
Domo arigato gozaimasu!

found some

Yay! I found a couple of big lists of internet news radio stations on the 'radiotower' and 'multilingualbooks' websites (can't post links as I haven't posted enough times yet) lots of stations listed on those sites.

I don't really know, but how about NHK:
NHKオンライン

NHK

arigato! I've been watching the TV news bulletins on NHK, but we couldn't see the link to their radio station section - many thanks for the link