In pictures: Life in an eco-roundhouse

As part of a series on housing and ways of life in the UK, Tony Wrench and Jane Faith talk about living in a Welsh eco-roundhouse.

Tony and Jane have lived for nine years in the Celtic-style home they built in Pembrokeshire.

The house, made of wood, turf, straw and recycled materials, is designed to make as low an impact on the environment as possible. "We are not going to survive in these numbers for the next few hundred years - people will have to live a lot simpler."