Buy yourself a second hand chainsaw, and investigate the possibilities of local fallen timber, especially after high winds. Seriously, have a drive around the local farm areas, most farmers are happy to get rid of them.
A friend recently came across two huge sycamores down in a neighbouring field (he's a small holder), rang the farmer, and the farmer told him twenty quid would swing it. He now has in excess of 10 tonnes of wood, which he reckons will last him the next 10 years.
I believe it was in the magna carta stating that you can take fallen trees for your own use, up to a couple of years ago, and new labour done away with it.