Retrospective and Prospective for Unifying Theories of Programming.- Object-Orientation in the UTP.- CSP Is a Retract of CCS.- A Design-Based Model of Reversible Computation.- An Operational Semantics in UTP for a Language of Reactive Designs (Abstract).- Constructing Property-Oriented Models for Verification.- A Relational Investigation of UTP Designs and Prescriptions.- Unifying Theories in ProofPower-Z.- Termination of Real-Time Programs: Definitely, Definitely Not, or Maybe.- Hierarchical Organisation of Predicate-Semantic Models.- Unifying Probability.- Pointers and Records in the Unifying Theories of Programming.- Mechanising a Unifying Theory.- Modal Design Algebra.