From my searches she had:-
2 x Octuple pom-pom (one either side outboard near main mast)
2 x 20mm Oerliken (one on each of "B" & "X" turret, though some images have her with one or other or neither in situ)
2 x 20mm Oerliken or 2 x Quad 0.303 (outboard alongside bridge forward of her forward twin 4-inch Mark XVI gun mounts).
Various sources state that she never had any 20mm Oerlikens actually fitted due to production shortages. Wouldn't clarification make life so much easier.