J. Anthony Hall FREng is a leading British software engineer specializing in the use of formal methods, especially the Z notation. Anthony Hall was educated at the University of Oxford with a BA in chemistry and a DPhil in theoretical chemistry. His subsequent posts have included: In particular, Hall has worked on software development using formal methods for the UK National Air Traffic Services (NATS). He has been an invited speaker at conferences concerned with formal methods, requirements engineering and software engineering.