Mix dry ingredients together, reserving 1 tbl spoon of sugar.
Cut the butter into bits and pulse in the food processor.
Beat 2 eggs with cream. Combine with dry ingredients and nuts/berries, try not to mix too much. Turn the dough out onto floured surface and knead it 10 times (no more).
Press the dough into a 1 inch thick rectangle and cut into 2 inch rounds or triangles. Place on an ungreased baking sheet. Beat the remaining egg with 1 tablespoon of water and brush the top of each scone, sprinkle each with reserved sugar.