| B.A.Arch | Bachelor Degree in Architecture |
| R.I.B.A | Associate Member of Royal Institute of British Architects |
| 1948 - 53 | B.A. Arch 1st Class Honours, Department of Architecture, University of Sheffield, England |
| 1953 - 74 | Pan. & Dion Toumazis, Architects and Engineers |
| 1975 - 76 | Page & Broughton, Architects (Offshore Consultants) |
| 1977 - date | Managing Partner, Dion Toumazis and Associates |