Place the lentils in boiling water, bring to the boil and cook for 8-10 minutes. Drain, drain and place in a bowl. Clean, wash and chop the radishes. Wash chives, shake dry and cut diagonally into small rolls.
Season vinegar with salt, pepper and a little sugar. Fold in the oil bit by bit. Add the radishes, chives and vinaigrette to the lentils and leave to soak well. Season to taste again if necessary.
Clean, wash and cut the cucumber into 8 slices. Wash tomato, grate dry and cut into 4 slices. Brush 4 cucumber slices with 1 tsp cream cheese each. Add 1 slice of roast beef and 1 slice of tomato. Stick 1 slice of cucumber and 1 olive on each with wooden skewers. Put lentil salad, raspberries and cucumber sandwiches in a box and close it