1931 Census of England and Wales, General Report, Table 28 : " University Electors, 1921 and 1931".

Constituency   1921     1931    
    Persons Males Females Persons Males Females
The University Of Oxford   9,500 8,923 577 18,261 16,313 1,948
The University Of Cambridge   12,004 10,089 1,915 28,118 24,186 3,932
The University Of London   10,791 8,463 2,328 16,501 11,434 5,067
The Combined English Universities   3,529 2,700 829 19,109 12,507 6,602
The University of Wales   1,260 892 368 5,121 3,325 1,796
               
TOTAL ELECTORS   37,084 31,067 6,017 87,110 67,765 19,345