The Crown Prosecution Service says it also looked at four other cases of alleged FGM - one of which was new and three that were reconsidered after decisions to take no further action - and found there was insufficient evidence to bring charges.
One of the old cases involved a man calling an FGM helpline, intended for victims, to ask for the procedure to be carried out on his two daughters.
The new case involved two parents accused of taking their daughter abroad to have FGM.The CPS would not give details of the other two cases.
Prosecutors are considering another four cases of alleged FGM, and are in early discussions with police about another two.
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