Preheat the oven to 220C/ 425F/ gas mark 7. Line a baking tay wih parchment paper.
In a large bowl mix the flours, bread soda and baking powder and mix in the salt.
Rub in the butter until the mixture resembles fine breadcrumbs, then mix in most of the poppy seeds.
Pour in most of the milk and, using a knife, bring the mixture together.
Tip the mixture onto a floured surface and gently knead it just to bring it all together.
Form it into a round shape and gently press it down to a round of about 1 inch/ 2 1/2 cm thick.
Place the loaf onto the baking tray, brush with a little milk and sprinkle ove more poppyseeds.
Place in the oven for 25-30 minutes until risen and golden.
This is best eaten while still warm so don't wait aound.