| Captain C. J. Bowen | May, 1915-November, 1917. |
| Captain F. C. Oliff | November, 1917-December, 1918. |
AFTER THE WAR.
| Captain and Brevet Major W. H. Ramsbotham | May, 1920-December, 1921. |
Regimental Sergeant-Majors.
| R.S.M. G. Stevens | 1860-1868. |
| R.S.M. P. Kenny (11th Regiment) | 1868-1886. |
| R.S.M. T. Winscombe (Grenadier Guards) | 1886-1896. |
| R.S.M. W. Wilson (Grenadier Guards) | 1896-1905. |
| R.S.M. J. Pride (Grenadier Guards) | 1905-1907. |
| R.S.M. A. Toomey (Scots Guards) | 1907-1914. |
THE WAR.
1/15th Battalion London Regiment.
| R.S.M. A. Toomey | August, 1914-August, 1915. |
| A./R.S.M. B. J. Jolliffe | August, 1915-December, 1915. |
| A./R.S.M. R. H. Haylett | January, 1916-March, 1916. |
| R.S.M. W. Richards | March, 1916-February, 1918. |
| A./R.S.M. W. F. TorbellCMay, 1918-December, 1918. |
2/15th Battalion London Regiment.
| R.S.M. A. Freemantle | April, 1915-October, 1917. |
| R.S.M. H. W. Lovelock | October, 1917-September, 1918. |
| A./R.S.M. R. Dyer | September, 1918-October, 1918. |
| R.S.M. D. C. L. Edwards, D.C.M. | October, 1918-December, 1918. |