Hi Ballast, Unfortunately, don't have a fence with posts. Still some good ideas for the shelving. Thanks.
Hi Blazing,
Only looked at Gumtree so far, and wasn't impressed by the prices.
But a 3mx1.5m on eBay can be purchased for $300 + $100 delivery. Then I need to make shelving. I'll have a better look. Some even provide shelving.
So sheds are an option. Will need to open the front - remove the doors and at least one panel in front - so the boards can be easily extracted.
Also - not sure what's expected to be under the shed - a concrete slab? Or can it be bolted to the paving.
A wooden shed is still bugging me, as it can be created to the dimensions which suit the space.