First season of synergistic gardening - what to plant next?

I'm doing my first season of trying out Emilia Hazelip's synergistic gardening approach on my allotment in the UK. I have 4 raised beds, all covered with barley straw.

I've had a very good yield of early potatoes (bed 1), broccoli + cabbages (bed 2) and broad beans (bed 4) so far. Bed 3 is main crop potatoes, so still in the ground. I have planted sweetcorn in bed 1... but what I'm wondering is what to follow the broad beans with, and the cabbages/broccoli once they are up ?

I have looked at Emilia's video, but her plant choices were suitable for Spain where she lived, rather than alternately rainy and sunny Southern England

Should I try peas/french beans to follow the broad beans, and winter cabbages in the cabbage bed? If so, when do I rotate?

Thanks

How about some chard or beets (or beetroot as you in the UK call it)? This week is generally when temperatures peak in the Northern Hemisphere, so from here on out the weather is going to be getting cooler. You can start thinking about starting your cold-hardy crops so that they will be well established when the freezing weather returns. Chard and beets fit that requirement and you could be harvesting them well into the winter.

This is also the time when onions are forming seed heads. Onion seeds are not long lasting; they were meant to fall from the onion and germinate immediately so that new onion plants could get established and be ready in time for winter. You could follow your broad beans with onions and harvest them as scallions over the winter or wait until the days lengthen in spring for them to form bulbs.