Stage design in general; History of stage design and theatrical effects;
Costume design; History of Pantomime.

“The Oberon Glossary of Theatrical Terms” (Oberon Books, 1991)
“Pantomime, a Practical Guide” co-author with Tina Bicat (The Crowood Press, 2004)
“The Handbook of Set Design” (The Crowood Press, 2006)
“The Handbook of Model-making for Set Designers” (The Crowood Press, 2008)
“The Handbook of Techniques for Theatre Designers” (The Crowood Press, 2010)