Preheat oven to 400 F
In a large bowl, combine the flour, sugar, salt and baking powder. Open the 3 Earl Grey tea bags and empty the contents into the flour mixture and whisk to combine.
Grate the frozen butter and incorporate it to the flour mixture ideally using a pastry cutter until incorporated and the mixture has a texture of fine crumbs. If you don't have a pastry cutter, you can use your hands but work quickly so the butter doesn't get too warm.
On a separate bowl, mix the cream, egg and vanilla. Pour over dry ingredients and mix together until completely combined.
Place the dough onto a lightly floured surface and shape into an 8-inch disc. Slice into 8 wedges like a pizza.
Place scones on a silicone-lined baking sheet and bake for 18-22 minutes, until scones are golden brown. Remove from oven and let cool completely.