A CCTV drain inspection sends a high-resolution waterproof camera through the pipework while the operator watches live footage. Distance counters and sonde transmitters let the operator log exactly where each defect sits — both along the pipe and under the ground.
It is the standard way to diagnose recurring blockages, assess pipes before purchase or renovation, and verify the quality of repairs such as relining. The result is evidence: instead of guessing, you see cracks, roots, bellies and broken joints on screen.