Honorary Membership was limited to 10 from 1890-1900, and to 15 from 1901 onwards. Corresponding Membership was a lesser class of Honoris causa membership in the early years. A few honorary members, such as Barnard, were first made corresponding members for a short time before being recommissioned as honorary members.
Nation(s) |
Start | End | |
|---|---|---|---|
| Huggins, Dr. Sir William | United Kingdom | 1891 | 1910 |
| Downing, Dr. Arthur Matthew Weld | United Kingdom | 1896 | 1917 |
| Moore, Sir Patrick | United Kingdom | 1993 | 2013 |
| Ryle, Sir Martin | United Kingdom | 1973 | 1983 |
| Dyson, Sir Frank Watson | United Kingdom | 1916 | 1939 |
| Christie, Dr. Sir Wm. Henry Mahoney | United Kingdom | 1891 | 1922 |
| Spencer Jones, Sir Harold | United Kingdom | 1947 | 1960 |
| Maunder, Mr. Edward Walter | United Kingdom | 1894 | 1928 |
| Brown, Dr. R. Hanbury | United Kingdom/Australia | 1987 | 2002 |
| Newnham, Right Rev. Jervois Arthur | United Kingdom/Canada | 1895 | 1905 |