If anyone needs a tent, LIDL's are doing a great looking Eurohike style one for £25, but as with most of these item's they're usually ony around for a week or so. There's also a much bigger version (which should accommodate at least half a dozen sheep) for about £80.

Mindblaster, the only cost is for camping (mainly to cover the cost of the Portaloos) and that's only £4 per unit (ie tent caravan etc) per night.