Ring culture in the GH

My new pots arrived today so I was able to finish putting all the old soil into pots on the right side. The wilted courgette plant had to be pulled up but I shoved it into a pot to show I care. Also dug up and replanted some rocket seedlings. 
When I'm feeling energetic I need to move all the pots out, so that I can lift the manky plastic that's beneath them and lay the wool insulation.
I'm leaving the left side as it is for now. I'll see how the pots perform next year. 
I'll be sowing mangetout peas in the pots next week for overwintering.

Are those brand new pots V? They look very smart. Are they the 30lt pots you've been on about?