After chasing around, I finally came up with an idea
Spoke to the new people taking over the premises, and they will allow me to build my own small workshop at the back end of the building It`ll be steel framed and sheeted with crinkly tin 10m long x 7m wide and 3.5m high.
Sadly, it wont be tall enough for the 4 post, but, I`ve got that sorted too. A garage, on the same estate, will let me use theirs, all they need is 1 weeks notice, and I can use it for a complete weekend.
Just thought I`d share that with you all