Sieve the flour and icing sugar into a bowl, then add the cubed butter and a pinch of salt.
Using your fingertips, rub the butter into the dry ingredients until you have a crumbly, sandy texture with no large chunks of butter remaining.
Alternatively, you can use a food processor and blitz until you achieve the same consistency.
Add the milk, a splash at a time and gently mix with your fingertips until the dough starts to clump together. If it's a little dry, add more milk.
Shape the dough into a flattened disc then set aside in the fridge to cool wrapped in cling film for at least half an hour.
Lightly flour your work surface and begin rolling out your dough, making sure you rotate the dough after a few rolls to ensure it isn't sticking to the bench. If it is, add a little more flour.
Roll into a semi uniform circle that is about 3mm thick and about 5-10cm larger than your pan. If your tin has higher sides, allow for extra leeway when cutting your dough.
Carefully drape the pastry into the tin and with any leftover pastry scraps or with the back of your knuckle, press the pastry into the corners of the tin (and ridges if the tin is fluted) so the edges will be nice and sharp once baked.
Dock the base of the pastry all over with a fork or the tip of a sharp knife.
Cut the remaining pastry from the rim then set in the freezer or fridge for 20 minutes or 1 hour respectively.
Cover the pastry with alfoil, making sure it's moulded to the shape of the dough then fill with either uncooked rice, beans or pastry weights.
Bake in a 180˚C oven for 15 minutes, then remove the foil and weights and place back in the oven for about 15-20 minutes or until nicely golden and cooked through.