Agree about the strafe! We had a fun time after the South Atlantic war learning strafe again on the F-4 and on one memorable trip I surprised myself with quite a good score at Cowden or Donna Nook or wherever it was!
Re. the Canberra, the Boulton-Paul gunpack which could be fitted to the B(I)8 held 4 x Hispano 20mm cannon. Again, not in the same league as the 4 x Aden 30 mm in the Hunter, but from what I've heard it was quite fun firing the thing.