1. in a un-used space to the side of the garage, covered in nettles but will be fertile I'm sure once it's clear it BUT this space has the garage to its east and to the south west and west mature broad leaved trees that shade it through the summer.
2. to the east of the house, beside a a single row of pine trees that surround the house. Much sunnier and more open position, but on ground that is dry and completely full of tree roots which will always be there, and drawing the nutrition I add back out of the soil.
I'm inclining to the first location on the thoughts that a polytunnel provides most benefit in the winter up here and during the winter the trees are leafless and don't shade the plot anywhere near as much.
Thanks!
