Spinach, salad leaves, broad beans, peas.

Chinese cabbage, mizuna greens, baby turnips (esp. white types), pak choi, American cress, and spring cabbage can be sown for planting out in the autumn. (Though not all in 1.5 sq m!!)

Sprouts or sprouting if you can buy the plants, too late to sow seeds.

Thanks, I have just been given some spare lettuce plants by a friend so have planted them in the spare ground. Thanks to Lizziebee - I have a sprout in apot...not sure how well it will do.