| Chief Inspector : Harold, Sir Roberts. |
| Deputy Chief Inspector : T. A. Rogers. |
| Deputy Chief Inspector : H. R. Houston. |
| Deputy Chief Inspector for Special Development Duties : Dr. A. Winstanley. |
| Principal Medical Inspector : Dr. J. B. Adamson. |
| Deputy Principal Medical Inspector : (Vacant) . |
| Senior Inspector for Special Development Duties (Roof Control) : W. H. N. Carter. |
| Senior Inspector for Special Development Duties (Dust) : W. Staton. |
| Principal Electrical Inspector : J. Cowan. |
| Deputy Principal Electrical Inspector : H. Rainford. |
| Senior Electrical Inspector : R. Dobson. |
| Principal Inspector of Mechanical Engineering : A. E. Crook. |
| Deputy Principal Inspector of Mechanical Engineering : S. J. Ayres. |
| Inspector of Mechanical Engineering : T. K. Clanzy. |
| Inspector of Mechanical Engineering : D. G. K. Pearce. |