In a large saucepan or stockpot, bring potatoes and chicken broth to a boil. Cook until potatoes are tender. Meanwhile, place bacon in a large, deep skillet. Cook over medium high heat until evenly brown. Drain, reserving 3 tablespoons of grease and set aside. Sautee the leeks in the frying pan with the reserved bacon grease 8 to 10 minutes.
When the potatoes are tender, stir in the fried leeks, heavy cream and bacon. Stir to blend and remove from heat. Serve hot.