Sharpe Accredited Plumber Mark advises residents of old houses to get their drains regularly checked.
A large percentage of the older homes he inspects have issues relating to the age of drains. This is due to many being made from earthenware or ceramic pipes, which over time crack and become susceptible to tree or shrub roots entering.
You should act before this happens, as once blockages develop; it will become a recurring issue without a major repair.