Preheat the oven to 400 degrees. Line a baking sheet with parchment paper.
In a big bowl combine the flour, salt, baking powder, and sugar. Mix well.
Slice the butter into small pieces and add to the flour mixture. Using your fingers mix the butter into the flour mixture until it resembles wet sand.
In a small bowl mix together the egg, milk, and heavy cream. Add to the flour mixture and mix until just combined.
Fold in the strawberries and dried strawberries gently.
Turn though dough onto a floured surface and pat into an 8 inch circle. Slice the dough into 8 equal pieces.
Place them on the prepared baking sheet 2 inches apart.
Brush the beaten egg onto the scones and sprinkle with sanding sugar.
Bake for 18 minutes. Remove from baking sheet and cool completely on a wire rack.