Preheat the oven to 220C and line a baking tray with baking parchment
Mix the flour and the butter in a large bowl until just about combined. I've learnt this is the really important bit and not to do it for very long or the scones will go rock hard. Quickly stir the sugar in too
Warm the milk in the microwave for approx 40 secs until warm (not hot). Add the lemon juice and the vanilla to the milk
Make a well in the middle of the flour and add the milk mixture. Stir in quickly until just combined
Roll into approx 5cm high on a floured surface and cut using a scone cutter (I used a 3" cutter dusted with flour so it didn't stick. I got 10 scones out of this mix
Cook for 14 minutes until golden (Turn the oven tray round after about 10 minutes so you get an even bake)