Preheat oven to 400°F (205℃).
Whisk flour, sugar, baking powder, salt, and orange zest in a large mixing bowl.
Quickly cut the butter into the flour mixture using your fingertips or a pastry cutter until the mixture resembles coarse crumbs; this might take about 3 to 5 minutes.
Mix in the cranberries.
Make a well in the center of the bowl and add heavy cream and eggs. Stir with your hands or a rubber spatula until it forms a rough ball (about one minute), being careful not to overmix.
Transfer dough onto a floured board or surface; then knead 3-4 times, just enough for it to come together.
Gently press the dough down to 1 inch thick, then use a 2-inch round cookie cutter or a glass to cut out the scones into thick circles, press remaining scraps into another whole piece, and cut again until the dough has been used up. You can also cut the dough into eight wedges, like traditional scones, with a knife or bench scraper.
Bake at 400°F (205℃) for 15-20 minutes or more until lightly browned. Start checking after 12 minutes.
Remove, let it cool on a wire rack for about 5 minutes, and serve warm or let it cool completely before proceeding with the glaze.