Custard with breadcrumbs

1 1/4 cups plain flour 1/2 cup self-raising flour 1/2 cup caster sugar 125 g butter , chopped 5 eggs 3 teaspoons water (also will need weights for pastry[...]

100 g butter , melted in a saucepan 100 g icing sugar , sifted 100 g plain flour , plus extra for dusting 100 g egg whites 200 g currants pastry dough 225 g[...]