Developer of the Saxon XSLT processor. Author of XSLT 2.0 and XPath 2.0 Programmer's Reference. Editor of the XSLT 2.0 and 3.0 specifications in W3C. Founder of Saxonica. Previously: PhD at University of Cambridge in 1975, then 25 years with ICL (now part of Fujitsu) and 3 years with Software AG.

StackOverflow have forced me to wear a "Strunk and White" badge despite my protestations. Strunk and White is a 19th century guide to writing pompous and old-fashioned American English, it is the antithesis of the way I try to write. I wear the badge with shame.