Add flour, sugar, salt, baking powder, baking soda and salt to bowl of food processor and combine
Add pieces of butter and pulse lightly until mixture resembles a coarse meal with a few larger pieces. I pulse on and off about 20 times.
Transfer dry ingredients to a mixing bowl and add zest and rosemary.
Make a small well in the middle of the mixture.
Add lemon juice and toss lightly with a fork and then add the cream, tossing lightly with a fork until just combined. Do not overmix. If it is too dry and won't hold together, add a wee bit more cream...one tablespoon at a time.
Transfer mixture to a flour-covered surface and, using your hands, flatten into a one-inch thick rectangle approximately 5 inches by 8 inches. Cut into triangles and place on parchment-lined cookie sheet.
Cover with plastic wrap and refrigerate for at least 2 hours. These can also be frozen and kept in an airtight container until ready to bake at a later date.
Preheat oven to 375°F (191℃)
Bake for 15 minutes, rotate and then another 15 -20 minutes until lightly browned
Allow to cool.
Prepare glaze by mixing all ingredients. If glaze is too stiff, add additional cream one tablespoon at a time until it is a consistency that can be drizzled.
Once scones are cool, drizzle the glaze over the scones.