Depends how much land you've got ready to plant. "New", as in recently cleared & awaiting a first crop; or "new", as in acquired earlier in the season. first stuff cropping & where do I go from here?
There's plenty of stuff you can still grow in modules or sow direct. (Trawl back over earlier threads and you'll get plenty of ideas.) But the next "planting window" is mid-October when you plant out onions & garlic (& broad beans where you live). So if you're in the "getting beds ready for a crop" stage, get them ready for those.
Then start preparing land for the potatoes next March.