The Physical and Theoretical Chemistry Laboratory (the PTCL) is one of three laboratories comprising the Department of Chemistry, University of Oxford. The Laboratories were united 'under one roof' in 1993–1994 to create the largest and most productive, '5* quality' university research laboratory in the UK, typically publishing around 200 original research papers and books each year. It accommodates nearly 30 academic staff, including in recent years eight Fellows of the Royal Society and seven Royal Society University Research Fellows (URF's). The laboratory also houses some 40 post-doctoral researchers (in recent years including Ramsay Fellows, Glasstone Fellows, Leverhume Fellows and Dorothy Hodgkin Fellows), around 100 graduate students (more than half supported by Research Council awards), and over 40 Part II undergraduate students. In addition, we regularly host senior and post-doctoral visiting researchers from all around the world. Access for researchers to view the paintings is by appointment only.