The following individuals were employed or trained by this architectural practice (click on an item to view details):
Employees or Pupils2
| Name | Position | Date From | Date To | Notes |
| Alexander Thomson Heathcote | Assistant | In year 1899 | In year 1902 | |
| James McKissack | Partner | In year 1900 | In year 1940 | |
| John McKissack | Partner | In year 1900 | c. 1912 | |
| Alexander Thomson Heathcote | Assistant | In year 1903 | In year 1904 | |
| William Barclay | Assistant | 1903 or 1904 | 1904 or 1905 | |
| William Wallace Friskin | Apprentice | In year 1905 | In year 1910 | |
| David Arthur Carmichael | Assistant | In year 1912 | Before 1914 | |
| John Hinshelwood | Apprentice | 1923/04/14 | 1928/04/14 | |
| William James Anderson II | Partner | c. 1924 | | |
| John Hinshelwood | Chief Assistant | 1928/04/14 | 1939/10/08 | |
| James Boyne Watson | Assistant | In year 1934 | In year 1940 | |
| James Boyne Watson | Assistant | In year 1946 | | |