Mark Brinkley considers why the UK has the smallest proportion of self build across Europe and what changes might need to occur if we wanted to adjust the balance. Mark shares why Germany's system is more likely to lead to higher standards and communities that embrace development.

London's Ecobuild has just concluded for another year and Ben Adam-Smith shares his experience of the event. In this episode he chats to four people he met there - Janet Cotterell from Passivhaus Homes, Jon Bootland from the Passivhaus Trust, Jo Gooding from the UK Cohousing Network and Robert Stern from Litmus Films.