Preheat your oven to 425°F and line a baking sheet with parchment paper.
In a large mixing bowl, whisk together the flour, baking powder, baking soda, sugar, and salt.
Work the cold butter into the dry ingredients using a pastry cutter or your fingers until the mixture resembles coarse crumbs.
Pour in the buttermilk and gently fold the mixture until just combined. Be careful not to overmix!
Drop heaping 1/3-cup spoonfuls of dough onto the prepared baking sheet, leaving about 2 inches of space between each biscuit.
Brush the tops of the biscuits with heavy cream and sprinkle generously with turbinado sugar.
Bake for 15-20 minutes, or until the biscuits are golden brown and smell heavenly.
While the biscuits cool slightly, combine the sliced strawberries, sugar, and lemon juice in a large bowl. Let this sit for at least 30 minutes to allow the strawberries to release their juices.
To serve, slice a biscuit in half, spoon the macerated strawberries on top, and drizzle with the sweet berry juice.