| 21. | He is an Honorary Professor of Nanjing Aeronautical and Astronautical University.
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| 22. | Frank taught as a guest or honorary professor at the Sibiu.
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| 23. | He is a visiting honorary professor at the University of Exeter.
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| 24. | He is an Honorary Professor at Aberystwyth University and Nottingham University.
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| 25. | He is also an honorary Professor of Economics at the University of Canberra.
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| 26. | She is an honorary professor at both Scottish Schools of Pharmacy.
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| 27. | She is also an honorary professor at the University of Glasgow.
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| 28. | These led to him becoming Honorary Professor of Aeronautical Engineering at Beijing University.
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| 29. | In 1927 he went back to Bristol as Honorary Professor in Applied Chemistry.
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| 30. | He had an Austrian honorary citizenship and an Austrian Honorary Professor.
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