I'm no carpenter, but built it myself, although it was meant to replace a falling down little shed at my previous house, but took too long in the planning/execution that its ended up here. would have made it bigger had I known. It has a brick floor and oak window and will accommodate a motorcycle, but now houses the bicycles.
Home built main frame is welded steel, with a galvanised steel sheet roof over 3/4" ply, an integral ash workbench and is insulated and lined out. The honeysuckle is now well established, but started out as a small clump taken from that which covered the shed I was replacing. It covered the shed completely and was virtually holding it together. No such worries now.
Made in England, built to last.