The water seems to be coming from under the battery area because everywhere else around it is dry. The car never had any problems with overheating so I don't think it's a burst pipe. It's something I'll look into but got to get the poor thing started again first.
As for alarm : With all fuses in the alarm sounds but switching central locking off and on quickly a few times stops the alarm. Unfortunately, as soon as I open the door, the alarm starts again. Any ideas much appreciated..