Spread cream cheese on 4 slices of bread. Layer with cucumber slices, smoked salmon, and dill. Top with remaining bread slices and cut into quarters.

Preheat oven to 400°F (200°C). In a mixing bowl, combine flour, baking powder, and sugar. Cut in butter until mixture resembles coarse crumbs. Stir in cream until just combined. Turn dough onto a floured surface, knead gently, and shape into a circle. Cut into wedges and place on a baking sheet. Bake for 15-20 minutes until golden.

Roll out puff pastry and cut into squares. Place a spoonful of jam in the center of each square. Fold over to form triangles and seal edges. Brush with beaten egg and bake at 400°F (200°C) for 15 minutes until golden.