Predominantly this service is undertaken by housing associations, local councils or private residents when they need an unbiased, reliable, independent witness to help resolve a local community issue or ultimately provide legal evidence for court proceedings. A professional witness can help to tackle and resolve many issues including noise pollution, anti-social behaviour amongst other criminal activities such as drug dealing, prostitution and sub-letting.

The PWG witnesses, all come from a police or military background and are skilled in private investigation work and surveillance to ensure any valuable information is recorded accurately. The witnessing tasks are generally undertaken over a number of occasions for a couple of hours at a time to ascertain a fair overview of the complaint.