Preheat the oven to 200C/400F and line a baking tray with a silicone mat/grease proof paper.
Place flour, sugar, poppy seeds, baking powder, salt, zest and butter cubes into a large bowl and rub between your fingers until you have a coarse breadcrumb texture. Some larger lumps of butter and flour are fine.
Add in the lemon juice, stir briefly and then add in the eggs. Mix with a wooden spoon just until you can't see the eggs, then add in milk, 1tbsp at a time, mixing in between each addition until a soft dough forms.
The dough shouldn't be overly sticky, just smooth. A few crumbly bits are absolutely fine!
Tip the dough onto your prepared baking tray and pat into a circle, roughly 1/2 an inch thick.
Using a pizza cutter or knife, slice into 6-8 wedges. I halved the dough both ways, then cut diagonally across both ways to create 8 triangles.
Use a spatula to pick up the scones and just spread them out slightly, just to give them room to rise.
Place in the oven for 10-12 minutes until risen, puffy and lightly golden.
Leave to cool on the tray for at least 10 minutes, before transferring to a wire rack to cool completely.
Once cool, make the glaze: place icing sugar into a medium sized bowl, then add 1tbsp lemon juice, mix until well combined and smooth, add in a little more lemon juice if required. You want a consistency which will pour off of a spoon easily.
Place a piece of kitchen roll under your wire rack and then spoon the glaze all over the scones. It's a pretty transparent glaze, so you will only see a sheen on each scone, but it really revs up the flavour!
Lemon Poppy Seed Scones will keep in an airtight container, at room temperature for 4 days.