Hurricanes and Hispanos

Can anyone confirm (refute?) that all cannon-armed Hurricanes were fitted with Hispano guns and not Oerlikons? (With the possibly exception of L1750 and its two underslung examples?).

My understanding was that the RAF did not adopt the Oerlikon for any aircraft, but Francis Mason is quite definite about its use on the Hurricane, and in places gives detail difficult to explain away as a simple misunderstanding. There is no better historian for the Hurricane, as yet, but he does have a few blind spots, and I suspect this is another.

AP1564B Vol I AL26 does indeed say Hispanos, but it could have been different for earlier issues.