Keep the grated carrots in ice-cold water for 30 minutes and drain.
Put the raisins in a bowl and pour boiling water over them. Leave for 10 minutes and drain.
Peel the oranges and separate the segments.
Mix the mayonnaise, fresh cream, lemon juice, sugar and salt.
Mix the carrots, raisins and oranges. Pour the mayonnaise mixture, mix well and chill.
Decorate with carrot slices. Serve chilled.