it is a topic of hot debate, some say the market decides, others say property speculation by the megarich is to blame. whatever the cause, it has driven britain back to living off of the land. >> before claire and charles moved, they lived in the center of london. she was a elbit imaging, he was a chef. they had a two room -- she was a yoga teacher, he was a chef. >> millionaire started buying properties around us>>. the rate just went up. >> now they share 300,000 square meters with 30 adults and five children. the community produces its own food. most people work a little to earn money, otherwise they are self-sufficient. the heat and cook with wood, everything else is powered by wind and solar energy. >> for us it was a huge difference, what are you going to do? where's the security? when you do it, you realize it's not that bad after all. >> more and more people think the same. around 150,000 of them in britain are living off grid, independent of the municipal electricity and sewage supply. without access to local power and suga services -- sewage services, life is slower but uses les