Thanks guys, spent yesterday putting down the concrete base, feel like a ninety year old this morning after wheelbarowing 2 tonnes of ballast and 13 cement bags. The base was finished and cost around £150 including hire of a cement mixer and wood for the concrete edging. The cabins have cost more, I don't have time to build them so they are £150 each. I'll stick some pictures up when its all finished, the only dwon side was/is the drainage, its impossible with the lie of the land and position of the base to run the drain to the mahole so i'm digging a four foot deep soak away and filing i