Charlotte is good, its an excellent salad potato - lovely with a bit of butter or blob of mayonnaise. But Pam's given me pause for thought now over main crops! Vivaldi is also listed as a 2nd early but is meant to be a good baking potato. Would like to try a few Marfona - where do you get the seed potatoes from Pam?
Glyn, sounds like you're having a good time! Am envious 
It was extremely windy when I was at the plot today, and I discovered my water butt had fallen over. The ground is so soft the base had sunk on one side and as it was full the weight had caused it to fall.