With a mix of pedestrians and lifting machinery buzzing around, it's very important to record any mishaps. CCTV also acts as a deterrent to theft and will record what’s happened when things do go wrong. These days, when there’s been an incident or burglary, the first thing the police ask for is CCTV footage. Footage can be burnt onto a memory stick very easily and given to the police or insurance company, or emailed as required.
Of course, CCTV will not only deter intruders and unwelcome visitors but crucially record and/or alert you to unauthorised activity, after hours.