Preheat oven to 180c/350f/gas 4. Line a 12 hole muffin tin with paper cases. Combine all the ingredients for the cakes in a large mixing bowl and beat until smooth.

Spoon into the cupcake cases and bake for 15-20 minutes until risen and a toothpick comes out clean. Remove from the oven and transfer to a wire rack to finish cooling.

For the icing, beat together the butter with half of the icing sugar until smooth and light. Combine the raspberries, lemon juicd and remaining icing sugar in a saucepan and bring to a simmer over a moderate heat.

Crush the raspberries using the back of a spoon then remove from the heat. Sieve and collect the juice in a bowl and allow to cool. Add this to the buttercream and beat until smooth. Whip the double cream in a seperate bowl until it forms soft peaks, then fold it through the butter and raspberry mixture until smooth and even.

Spoon into a piping bag fitted with your choice of nozzle then chill for 10-15 minutes. When cupcakes are cool, remove the icing from the fridge and let it come ba k up to room temperature. pipe the icing onto the cakes.