Preheat your oven to 200°c (190°c for fan-assisted ovens, Gas Mark 6 or 400°F). Line a baking sheet with a piece of greaseproof paper and set aside.
Sift the flour, bicarbonate of soda and salt into a large bowl. Make a well in the middle before pouring in the buttermilk.
Gently stir together, being cautious not to mix too vigorously. Once the wet and dry ingredients have started to come together and you can no longer mix with a spoon/spatula, use your hand to form it into a soft, slightly sticky dough.
Turn the dough onto a well-floured surface and very gently knead it into a loose ball - try not to knead it more than 2-4 turns to do this.
Gently lift the ball of dough onto your prepared baking sheet. Gently press to flatten a little, before cutting a cross over the top of your soda bread.
Bake in your preheated oven for about 30 minutes, until golden brown.
Allow your loaf to cool for at least 30 minutes before slicing. Soda Bread will keep in a sealed container, or wrapped in cling film for a couple of days.