Sieve flour into bowl
Add sugar and rub in butter until mixture resembles fine breadcrumbs
Beat egg with about 2 tbsp milk, stir in
Add more milk if required and bring dough together with your hand
Place on a VERY LIGHTLY floured surface and knead gently
Flatten to about 1 cm and cut
Place on tray, brush with egg/milk
Bake for about 10 mins and leave to cool on cooling tray
Whisk cream to form peaks
Split scones and spread jam on each side
Pipe cream onto base
Replace top
Sprinkle with icing sugar