I have 20 years of experience, and specialize in the field of green environemental and offsite or factory manufactured residential construction with specific knowledge in the areas of quality, technical suitibility and performance. I have published on such topics as environmental aspects of construction, green construction and legislation and factory and offsite construction. I have testified on environmental impact of construction on environment. I am regared as being of of Europes leaders in green construction and leading of regulatory reform. I co founded and build Europes largest prefabricated building amnufacturing company and sold it to a large stock market company.