In 40 seconds
Installing CCTV at a UK home usually costs roughly £100–£300 per camera installed, with a typical four-camera system around £800–£1,200 and a basic two-camera setup nearer £350–£650. Larger six-camera-plus systems often run £900–£2,000+, depending on cabling, camera type and access. Wired systems tend to be more reliable and give steadier footage but cost more to fit; wireless is easier to install but depends on Wi-Fi and batteries. You do not normally need planning permission or anyone's consent for domestic CCTV used to protect your own property — but if your cameras capture areas beyond your boundary (a neighbour's garden, the pavement or a shared space), the UK GDPR and ICO guidance apply, and you take on duties like signage, secure storage and responding to footage requests. The honest answer is always a range, because it depends on your property, camera count and how the system is wired.
Most CCTV guidance is published by companies selling and fitting the kit, so the numbers tend to be optimistic and the legal rules glossed over. The pages below give honest cost ranges, compare wired and wireless fairly, and set out the permission, GDPR and ICO rules — before you take a single quote.