Cumberland rum Nicky

Name: Cumberland rum Nicky
Ingredients: 225g/8oz dates, coarsely chopped; 100g/3½oz dried apricots, coarsely chopped; 50g/2oz stem ginger in syrup, drained and finely chopped; 50ml/2fl oz dark rum; 50g/1¾oz soft dark brown sugar; 50g/1¾oz unsalted butter, cut into 1–2cm/½-¾in cubes; 200g/7oz plain flour; 2 tbsp icing sugar; 100g/3½oz unsalted butter, chilled and cut into 1cm/½in cubes; 1 free-range egg, lightly beaten; 1 tsp lemon juice; 100g/3½oz unsalted butter, softened; 225g/8oz soft light brown sugar; 75ml/2½fl oz dark rum