Commercial CCTV maintenance should be treated like preventative risk control; it protects evidence quality, reduces blind spots and keeps operational monitoring dependable. Across Guildford, Surrey, facilities and security teams often only notice issues after footage is needed, which is why structured maintenance checks are so valuable. A common cause of repeat faults is connectivity. Servicing checks include confirming network and PoE stability, reviewing switch and port behaviour where accessible, and testing for intermittent link drops that create cameras offline or unstable feeds. This structured approach helps separate a camera fault from an upstream issue such as cabling, power, network configuration or a recorder port problem. We start by confirming recording and playback behaviour, checking for gaps, dropouts and storage health warnings. This includes reviewing NVR/DVR performance, verifying retention settings, and confirming that playback is stable across recent time windows. If footage export is required for your organisation, we also confirm that evidence can be retrieved in a usable format rather than discovering an export issue during an incident. We work in a way that supports facilities teams, not disrupts them. Checks are planned to minimise disruption to operating hours, and any issues found are explained clearly, with practical options if parts or upgrades are needed. The result is better confidence in monitoring, fewer surprises, and a system that is more likely to deliver usable footage when incidents occur.