Foreign objects also make their way into drainage systems after being flushed down the toilet and many of these objects, because they're not designed to be flushed away, will cause a blockage somewhere along the line. Finally, it might be a structural defect or breakage caused by tree roots, corrosion, or subsidence, but you can relax in the knowledge that whatever the problem, we can deal with it.
Blocked drains can be caused by a number of factors but most of the time it’s simply a build-up of whatever’s gone into the drain. This could be anything from grease and dirt to silt and leaves that have accumulated and resulted in blocked drains.