1933 Mannin Beg
12 July - Douglas: 50 laps x 7.403 km = 370,15 km

 Pole Position: N/A
 Fastest Lap: Hugh Hamilton   MG Magnette   4.41,0

Results: 

1 Fredddie Dixon   Riley 9 (1500/6)          4:13.35	
2 Dennis Mansell   MG Midget                 4.28,30	
3 Ludovic Ford     MG Midget                 4.34,01	
  M Baumer	                                   shared car	

Retirements:

  Hugh Hamilton    MG Magnette               35 Rear axle
  R Yallop         MG Magnette               31 Rear axle
  Kaye Don         MG Magnette               24 Engine
  Goldie Gardner   MG Midget                 24 Big end
  Syd Crabtree     MG Midget                 17 Crash damage
  R Mere           MG Magnette               15 Rear axle
  Billy Sullivan   Sullivan Special-Morris   14 Supercharger
  George Eyston    MG Magnette                6 Camshaft
  Victor Gillow    Riley 9 (1500/6)           4 Valve
  Tom Moore        Frazer Nash                4 Big end
  Eddie Hall       MG Magnette                2 Crash