There are several causes of flooding, both internal and external.
Within your home, burst pipes are a major cause. This is especially likely to happen in winter when your pipes can freeze up and crack. When the ice thaws your pipes will burst. Faulty radiators and boilers are also potential sources of water damage, as are blocked gutters.
Outside your home, heavy rains and storms can cause water levels to rise, presenting a risk to your property and even your personal safety.
The UK's changing climate is also likely to see more sudden heavy storms in years to come.