Can a private prosecution be initiated where the police have administered a caution?

A private prosecution commenced after a police decision to caution for the same offence may be stayed as an abuse of process, unless the terms of the caution made clear that a private prosecution was not precluded. Alternatively, it may be open to a private prosecutor to judicially review the decision to administer a caution (in order to have that decision quashed); a private prosecution can then be commenced.