Picture posting is enabled for all :)
If you have moved to Cornwall from "Up Country" I would give it a season before you invest in anything like a poly tunnel, the weather can make poly tunnels too warm in summer. I had one up North (Scotland) but have never needed one down here in the West Country. I do have small greenhouse for tomatoes and cucumber but the "spares" seem to do OK outside. A bird netting cage is useful to keep pigeons and seagulls at bay ( lots of seagulls even inland) as you are never far from the coast.