Nothing like a response like that to provide some ideas on which way to go here.
Kinda like the idea of getting the electrickery turned off and I'm getting a copy of the Notice to vacate and associated documents tomorrow to take into court myself to lodge a (section 21 is it called?).
In the meantime, I appreciate the advice of heavies etc, but better leave that until I see what the condition of the flat is like.
I'm also about to call the letting agent who he is supposedly getting a place with to give the the hurry up
Thanks heaps for all the replies. Might hand pick our next tennant:)