Hi Rob
Less space than the old shop where I had a double garage and another garage that was wider than a normal single garage but they were not connected and getting from one to the other required walking through the house which brought, shall we say, 'issues'! There were two cars in the double garage motorcycles and all manner of stuff cluttering up the single supposedly workshop garage.
At this new house we have a double garage for the cars and 36 sq metres in the shop which opens into the garage when required. I have this tidy area at one end of the shop with a bench against the walls, the lathe, mill and little shaper stand in a row down the middle of the shop and I have cabinets against the other wall and racks along the far wall.
I have 25sq metres of concrete just outside the door for doing really dirty and maybe dangerous stuff and a new garden shed which gives a sheltered area well away from all flammables, you should call by some time, allow about 45 hours for travel time if you dont sleep in a bed on the way..
John