GOV.UK
Working the examination: Surveillance
Surveillance activities are those that entail monitoring, observing or listening to persons. There are two forms of surveillance:
- intrusive surveillance, and
- directed surveillance.
HMRC is only permitted to undertake directed surveillance (see CCM5430 for the definition of directed surveillance). Activities constituting intrusive surveillance are described at CCM5420. You must avoid at all times carrying out any activity, which might amount to intrusive surveillance.