casey wrote:Thanks, will probally go with the last one, it will be worth a day taking it down to avoid any hassle, and in the meantime my car and motorbike will be saved from the sun.
This may sound like a stupid idea, but here goes anyway.
Doratis1980 wrote above,
"camper or caravan (if its on wheels and not steady on earth) only does not need any permissions", therefore, build your shed structure on wheels and fasten it to the ground with ropes and spikes, like a tent. It's most certainly not a "immovable structure" since it can be moved, even for few inches.!