[holding answer 10 March 2009]: The latest available statistics for the information sought were produced on 21 January 2009.
The number of persons with at least one arrest/summons entry on the Police National Computer was 7,258,061.
The number of persons with at least one caution was 1,819,509, of which 1,465,975 had one caution. Therefore the number of persons with more than one caution was 353,534.