H.M.P. (1976) 1976, Documentary, United Kingdom H.M.P. (1976) Duration: 53M Description: “What does H.M.P. stand for? Himalayan Mounted Police? Could equally be Hot Meat Pie, or Honesty, Modesty, and Purity”. Well in actual fact it stands for Her Majesty’s Prisons, and it is inside where we are a fly on the wall for t….. Trailer ↗ United Kingdom 1976 Documentary