Is it too late to plant some seed potatos for a late crop

You might just get away with planting first earlies but its too late for main crop.Even earlies can take four months to harvest. Plant them if you have them but I don't think its worth buying any.

Agree with Stera on main crop tatties though early potatoes should crop within 10 weeks.

Good news there then. I'm sure mine took longer than that but the spring was so cold its not surprising.