ISO9001:2008 accredited UK based irradiation company with over 30 years relevant experience Our Contact Details: Experience   Paul Stephens Consultancy Ltd is a UK company based in the South of England. We have more than 25 years experience in the field of irradiation plant design and development. We develop all our Plant Control Software in house. We develop all our Dosimetry Software in house. All our Plant Control Hardware is created in house.