smojo wrote:
This link is arc shaped corrugated sheeting. They state three sheets would make a shelter 8' x 6ft 9" and 4' high would cost about £100 which seems reasonable. It could be built up on a Would last for years with no maintenance and could be moved quite easily if required. I might have just talked myself into getting one
http://www.gumtree.com/p/roofing-ventilation/field-shelters-dog-kennels-pig-ark-sheets-corrugated-galvanized-0.7mm-275g/1087405468
just looked on the bay of E, prices vary between your quoted £100 and upto £400
an alternative way would be to make your ply ends, then buy used sheets and use them length ways, they would bend easy around the ply ends, still giving you the same shape/end result, ok the ridges would run the wrong way, but it's not the end of the earth, would be easier to transport flat sheets in too