Information collected from minute books by J.M. Bunting, January, 2010.
The (now dormant) limited company, founded in 1904.
| 1904 - 1912 | Lt. Col. Pollen |
| 1912 - 1916 | H. Bolinbroke Mudie |
| 1916 - 1922 | J. Mabon Warden |
| 1922 - 1931 | John Merchant |
| 1931 - 1933 | Robert Robinson |
| 1933 - 1936 | P. L. Wright |
| 1936 - 1942 | G. D. Buchanan |
| 1942 - 1949 | Miss Margaret Jay |
| 1949 - 1955 | W. A. Gething |
| 1955 - 1957 | A. C. Oliver |
| 1957 - 1960 | Mrs. F. White |
| 1960 - 1962 | N. R. Smith |
| 1962 - 1966 | Miss E. M. Wheatley |
| 1966 - 1972 | B. M. Cavanagh |
| 1972 - 1979 | G. Leon Smith |
| 1979 - 1988 | A. Diaz |
| 1988 - 1993 | E. McCanlis |
| 1993 - 2011 | Mrs. J. M. Bunting |
| 2011 - ... | Prof. J.C. Wells |
The charity, founded in 1976.
| 1976 - 1981 | G. Leon Smith |
| 1981 - 1988 | Mrs. M Austin |
| 1988 - 1991 | A. Diaz |
| 1991 - 1993 | G. Greatrex |
| 1993 - 1997 | S.K. Thompson |
| 1997 - 1998 Sept. | G. Greatrex |
| 1999 - 2004 | E. Grimley Evans (elected by ManCom Sept. 1998) |
| 2004 - ... | Prof. J.C. Wells |