What to put in after runner beans?

[Sonata]

I've got three zones to my raised bed..not marked out, but I divide them up along the fence lines so I can do the rotational thing.

Zone 1 is currently my "leafys/misc" zone, zone 2 is runner beans and zone 3 is home to my brassicas.

Zone 1 currently has onions, spinach, chard, perpetual spinach, spring onions, (hopefully carrots) and amaranths, and I hope to grow chard and perpetual spinach over winter under polytunnels.

Zone 3 has my pak choi, chinese cabbage, and will have some kale (sutherland, from the real seed company) once I plant that out.

Zone 2 has my beans, but what can I follow them on with? Should I rotate from left to right or right to left - I've heard brassicas should follow beans?

[taff]

Brassicas are down to follow beans because when you cut the plants down when they've finished, you cut them off at the root, and leave the roots in there for the nitrogen nodules on the roots to go back into the soil, and because brassicas don't like recently manured ground, but they do like a lot of nitrogen [to encourage green leafy growth]
So it'd make sense to move your brassicas to the now-bean zone next year...

[Two_Sheds]

My brassicas go in last year's bean bed, yep. Like what Taff said.

[Sonata]

How do you all get your timing's right though? I was planning on doing psb and overwintering kale, but they'll need to be planted soon - while the beans might go on til October..the psb and kale are seedlings/just sprouted at the mo, but surely I shouldn't move them once they go in?

[glut]

Oh thats just what I am having trouble with. I put some kale in around the outside bottom of the runner beans as I thought they might be slow enough to not bother the beans...but my next cabbages and caulis are ready to go in and the only space coming up is the cabbage bed?!