My BiL is looking for a workshop suitable for wood working, gate making, etc, within 20 miles of Aylesbury. Preferably with a 3 phase supply, but anything suitable please let me know via PM and I will pass it on.
My suggestion is that he should call at some farms in his area, and see if someone has something available. That's what I did, the place I got hadn't even been advertised. Rent is cheaper, there will always be 3 phase and things tend to be not so regimented.