Tim Dwyer has been actively involved in the communication and delivery of building services engineering for over 40 years and is currently honorary Professor in Building Services Systems at UCL in London. He is an active member of CIBSE, a founding member of the newly formed CIBSE Education Guild, and CIBSE Journal Technical Editor. He is also actively involved in ASHRAE and REHVA. Tim has published several hundred technical articles and organised/chaired/presented hundreds of technical meetings