Clay, roots and drains that keep blocking
Weald clay moves with the seasons. Where a pipe has shifted, a joint has opened or a section has settled, paper and fat start to catch, and each blockage is slightly worse than the last. Roots find the same joints, so a drain that has been cleared several times in a year is usually telling you something.
We clear the blockage with high-pressure jetting and, if it has happened before, put a camera down the pipe to look for the cause. That is better than paying to clear the same pipe again in a few weeks.
About drain unblocking