The threatened enclosure of the common land known as Town Moor in Newcastle in 1771 appears to have been key to Spence's interest in the land question and journey towards ultra-radicalism. His scheme was not for land nationalization but for the establishment of self-contained parochial communities, in which rent paid to the parish (wherein the absolute ownership of the land was vested) should be the only tax of any kind. His ideas and thinking on the subject were shaped by a variety of economic thinkers, including his friend Charles Hall.