| 1-5 | James Buckman |
| 6 | James Buckman and ? O. Pickard-Cambridge ? |
| 7 | uncertain |
| 8-13 | Morton G. Stuart |
| 14-21 | Nelson M. Richardson |
| 22-26 | W. Miles Barnes |
| 27-29 | Herbert Pentin |
| 30-32 | C. W. H. Dicker |
| 33 | C. W. H. Dicker † completed by Herbert Pentin |
| 34-37 | Henry Symonds |
| 38-53 | James M. J. Fletcher |
| 54-59 | E. C. Chancellor |
| 60-70 | R. H. Bunting |
| 71-76 | R. A. H. Farrar |
| 77-97 | J. Stevens Cox |
| 98-100 | W. G. Putnam |
| 101 | W. G. Putnam and Jo Draper |
| 102-117 | Jo Draper |
| 118-124 | Peter W. Lock |
| 125-132 | Katherine Barker |
| 133-139 | Paul Lashmar |
| 140- | Clare Randall |