 The grading system used in the civil service has changed many times, and the current structure is made up of two schemes.All senior grades (Deputy Director / Grade 5 level and above) are part of the senior civil service, which is overseen by the Cabinet Office on behalf of the civil service as a whole.Below the senior civil service, each individual department/executive agency can put in place its own grading and pay arrangements, provided they still comply with the central civil service pay and review guidance.