Today the Sentencing Council will publish draft sentencing guidelines on sexual offences in England and Wales.
They will cover a large number of offences, including rape, sexual assault, child sex abuse, indecent images of children and trafficking.
The BBC has learned that the council will recommend taking the psychological impact on victims into account, as opposed to the current guidelines which focus on the physical nature of the assault.
Lord Justice Treacy, who sits on the Sentencing Council for England and Wales, told Today presenter Evan Davis that a 15 year single rape sentence may be appropriate if there are "particular aggravating" circumstances.
"Previously that sort of level of sentence would have been suitable under the old guideline for what was described as a campaign of rape," he added.
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