Hi, the property I live in appears to have had a pipe to an outside tap run from the cold water pipe under the bathroom sink. Yesterday the outside pipe cracked where the tap connected to it and water was gushing out! For the life of me I cannot work out how to stop the flow of water. The isolation value on the cold water pipe under the sink works to stop the sink tap working but has no effect on the flow of water into the pipe running outside. I've taken off the bath panel and all I see is the hose attaching to a pipe and no isolation valves. Am I missing something really obvious or has this been completely bodged by whoever installed the tap?