Garlic,
get autumn sown peas (eg Keveldon wonder) and broad beans (The Suttton) ready for Sept/Oct
Might get away with turnips, abd radishes
Lambs lettuce
Kale if plants not seed
Chicory (looks like oriental cabbage)
Radishes
Spinach and swiss chard
Happy planting!! Any ground you dont fill, weed well and compost then cover with cardboard or carpet and it'll be beautiful by the spring