Question to the Home Office:

To ask the Secretary of State for the Home Department, how many police cautions have been issued for offences under (a) section 127 of the Communications Act 2003 and (b) section 1 of the Malicious Communications Act 1988.

Information going back to 2005 on police cautions for these offences has been published here:

https://www.gov.uk/government/statistics/criminal-justice-system-statistics-quarterly-december-2015

Data stretching further back is held by the Ministry of Justice, which is the department responsible for police caution figures.