Having repeated blocked drains near where builders were constructing steps we were concerned the builders digger might have caused some damage. We called Blockbusters and the next day they arrived and checked the drains with a camera feed all the way to the main sewers. The camera showed root penetration through the clay pipes. The roots were thus causing a blockage and not the builders digger. The drains were dug up and replaced and I put a claim for the work to my insurance company. A copy of the report from Blockbusters together with a DVD of the blockage resulted in the insurance company reimbursing the cost of the drain replacement. Thankyou Blockbusters for a slick and professional service.