The following individuals or organisations have carried out design/construction work. Where architects or practices worked together, matching letters appear beside their names in the Partnership Group column.
design classic
| Person | Partnership Group | Role | From | To | Notes |
| John William Small | A | | 1902 | | New shaft and head, and restoration of base - designer with Gauldie as executant architect |
| William Gauldie | A | | 1902 | | New shaft and head, and restoration of base - executant architect (J W Small was the designer) |