Preheat the oven to 425 degrees F. Lightly grease or line with parchment paper a large baking sheet.
Combine the flour, sugar, baking powder, and salt in a large mixing bowl. Add the butter and cut in until the butter is the size of peas.
Combine the egg, cream, zest, and orange juice in a medium bowl.
Add the wet ingredients to the flour mixture. Mix until the ingredients form a ball.
Transfer the dough to a floured surface. Shape the dough into an eight inch circle
With a pizza cutter or a sharp knife cut into eight wedges.
Place on the prepared baking sheet. Bake 11 to 13 minutes or until lightly browned.
Place on a cooling rack and cool completely.
While the scones are cooling make the icing.
Add the powdered sugar to a medium bowl. Gradually add the orange juice to make an icing that is the right consistency for drizzling over the cooled scones.
Drizzle the icing over the scones. Let the icing dry before serving.