Water leaks and overflows can cause an immense amount of damage and inconvenience.  If water is dripping down the outside walls from your overflow please turn off at your stopcock and call a plumber.

If you are going to be away from your flat for more than a day or two turn off your stopcock as a precaution.

Regularly open and close your stopcock to keep it working properly and not wait until you have an emergency before finding out that it is not possible to turn it!