Flooding from a water service pipe or internal pipework
This is the responsibility of the homeowner or landlord and would need the attention of a plumber (see "Yellow Pages" or similar directories).
If you are uncertain if any pipework is private, Severn Trent Water Ltd should be able to determine this. They can be contacted on 0800 783 4444, or through http://www.stwater.co.uk/.
Please see the Sandbag Policy for information about flood protection.