Living as I do in the U.S., I haven't a clue about what kind of weather you can expect over the next 45 days or so. But, here in the intermountain west, we continue to grow radishes, carrotts and even lettuce until middle of October, covering them if required for forecast frosts or freezes. If you don't get hard freezes until, say November, you could even try my favorite... parsnips. They're especially sweet in the late fall but need about 60 days to mature...
I sowed Sutton's Spring Onion on Monday of this week. They can be sown till mid-October and harvested in April. You might also consider Broad Beans (winter hardy variety).