My wife has an allotment (we are in the UK), and the rule - which I think is part of the Ts and Cs of rental rather than a anything statutory - is that you are

My wife has an allotment (we are in the UK), and the rule - which I think is part of the Ts and Cs of rental rather than a anything statutory - is that you are not allowed to stay overnight. Furthermore, there is no electricity or gas, so making a permanent home there would be difficult anyway. That said, people do have pretty snazzy sheds that they've elaborated into little houses, with propane-powered generators etc