64 days is the average time taken for the allocation of any case received by the ICO to a complaints officer, and includes the cases handled by an initial case reception team. Less straightforward cases are passed on to more specialist operational teams.
Once the specialist teams receive a case, the team leader conducts an initial appraisal before it is placed in a queue to be handled by the next available caseworker. The 130 days referred to above is the average time taken between receipt in FOI Operational Team 5 to allocation to a complaints officer in that team.
This information has been provided by the ICO.
I will write to the hon. Member to arrange for more detail to be provided on the ICO's case allocation process.