I agree, that should be covered.
You do not need to provide a police certificate if:
you have provided a police certificate with a previous visa application, and:
you make a further temporary entry visa application within 24 months of the date of issue of the police certificate
you make a further student visa application within 36 months of the date of issue of the police certificate
you make a further visa application as a partner or dependant of a student enrolled in any PhD programme within 36 months of the date of issue of the police certificate
you make a residence class visa application under the partnership or dependent child category within 24 months of the date of issue of the police certificate.