We called RRDC on a Sunday afternoon because we had a partially-blocked and leaking toilet soil pipe outside the house. Simon gave an initial diagnosis over the phone and quoted for the work. The next day, he arrived on-time and gave a clear explanation of his plan of work. He used a combination of remote-controlled, high-pressure water jets and an underground camera to locate what turned out to be a collapsed section of the pipe. Once the cause had been located, he quoted for the fix and then proceeded to remove the collapsed section and replace it with a fibre+resin section. Throughout the work he showed his working (with video and photos) and explained everything. He even seemed to relish the unexpected problems we encountered. Throughout it all he was friendly, courteous and professional. I'd definitely use him again and recommend him to others.