Cheers.
I hadn't thought it through, and originally planned to dig over and plant into the soil inside it, using it more like a cloche. But now i see how heavy it is, and inaccessible inside, I'm thinking some sort of adjustable shelves and literally use it as a greenhouse. I think I'll pop it onto a base of a couple of concrete slabs, which I already have my eye on. The top front panel hinges down and everything else is fixed with screws, including the top.
Going to christen it today with lots of seed sown into pods. This should be far better than my east facing kitchen window. But it'll also mean I HAVE to be vigilant with watering, which is so much easier in the kitchen. Time to revisit hydroponics or irrigation, because with the best will in the world, I won't be watering at the allotment every day.
Any suggestions for super simple automatic watering?
What about these... https://www.ebay.co.uk/itm/404071967187