I love R4 too. I used to have it on all day when I was working on my laptop, but these computers I'm using at the moment won't play internet radio, annoyingly.
I don't think it has a SouthEast bias, well, not that I've noticed (and I'm not in the SouthEast, so it's not that I simply wouldn't notice). Ok, the news covers the same stuff as the TV news, and there is always going to be a bit of London bias, but they also have the time to look at other stuff too...
I like Word of Mouth, Thinking Aloud, Material World, that sort of stuff. Plays - well, like any drama, some you're going to find more interesting than others. The comedy is almost always brillant - often laugh out loud, even when I'm on my own. And I am a bit of an Archers addict, well, I have to be really, they're like family to me...
You and Yours, well, there's a reason I always went for lunch at 12. Although I was on it once...
But possibly the best thing I've ever heard was the recent Go For It, on bereavement. One of the most heartrending, sensitive, thoughtful pieces of radio ever. Partly down to Micheal Rosen and partly because Barney Harwood handled it all so well, but mostly due to the kids in the studio, all of whom had lost a parent or sibling. Stunning. Sat and listened in tears, but strangely uplifted too. I don't usually leave Go For It on, but I'm very glad I did that day - I happened to be in the middle of cooking. I gather they received a deluge of praise, and they deserve an award for it.