She was given a caution which seems to pretty much be a finger wag and lecture to not do that thing ever again.  Cautions are covered by the Rehabilitation of Offenders Act 1974 and become spent immediately (apart from conditional cautions which will become spent after 3 months). Unless applying for particular types of work (see below), a person who has spent cautions does not have to disclose them to prospective employers, and employers cannot refuse to employ someone on the basis of spent convictions. However, when applying for particular types of employment, for example, working with children or vulnerable adults, certain professions such as law, health care, and pharmacy, senior management posts within certain sectors and employment where matters of national security are involved, the application form will state that it is exempt from the Rehabilitation of Offenders Act 1974. In these situations, you may need need to disclose your caution , and it may be disclosed on your DBS criminal records check. See Q89 for further guidance on whether your caution will be disclosed. Cautions will always remain on a person's record (source)  Note the "MAY need to". Not "must" but like "perhaps"