  We describe the evaluation of the anomalous dimensions of twist-2 deep
inelastic light cone operators to O(1/N_f) as a check on future perturbative
calculations. In particular we present recent results for the singlet gluonic
operator dimension in polarised and unpolarised scattering and give three loop
predictions for the O(1/N_f) gluonic eigenoperator. The section of the 3-loop
O(1/N_f) DGLAP splitting function proportional to the adjoint quadratic Casimir
is also calculated for the singlet gluonic operators.
