If the British didn't like HE rounds, why did the RAF standardise on a 50/50 mix of HE/I and SAP/I?
The HE/I/T rounds designed for the Hispano by the original French manufacturers were poor, detonating either at the surface of the target or, worse still, just after leaving the gun.
The replacement rounds designed by the British were found satisfactory by the RAF, in tests they always penetrated the target before exploding, unlike German mine shells.