The corrugated iron that was used in the war, especially in Anderson Shelters, was significantly thicker (heavier gauge) than that which is manufactured today - around 2mm thick rather than the current 0.7mm.
If you want to buy or sell heavier gauge corrugated iron, you should consider using eBay or Gumtree.
Although the metal is heavy, individual pieces can usually be carried by one person - although two is better. And I have transported it in a Citroen Berlingo car/van, so I imagine that it could be carried in a wide range of estate cars and vans. But please do check dimensions and weights before committing to a long journey.