Sieve flour, baking powder and icing sugar into a large bowl. 

Rub in the butter until it resembles breadcrumbs.

Whisk the milk, cream and egg together (hold back some of this for glazing). 

Bring the wet and dry ingredients together, use a butter knife to mix. 

Mix the zest and juice of two organges into the mixture. 

Gently mix the chocolate chips/grated chocolate through the mixture. 

Tip the mixture out onto a floured table, push down gently to about 1 1/2 -2 inches in height. Cut out 
with a cutter or cut into squares with a knife. Glaze with the remaining milk, cream and egg mix. 

Bake in a preheated oven at 180c for 20 minutes on a lightly floured baking tray.