| Bray, J. | before 1853–1870 |
| Bussell, Henry | 1852–1865 |
| Hodges, Thomas | before 1851–1853 |
| Holden, W. | 1853 |
| Mackintosh & Co. | 1853–1884 |
| Moses, Marcus | 1831–c. 1867 |
| Murphy, John | before 1843–after 1869 |
| Scates, Joseph | 1850–1865 |
| Sheridan, James | 1853 |
| Telford & Telford | 1847–1870 |
| Telford, Henry | 1847–1866 |
| Telford, William | 1830–1885 |
| Wilkinson, Thomas William | 1837–1880 |
| Wiseheart, J. | 1825–c. 1853 |
