Objectively, I wouldn't touch it mate. Its evidently going to soak up a lot of time and money just to get it sorted - you will almost certainly decide you want to refit the interior, the engine is old and will be tired, batteries if any shot. Its been stood so it will be damp and dirty. Its going to have a billion spiders and several tons of dust to clean. Then there's the engine: With diesel set to top £1.40 a liter in coming months, that's an issue ..
As for the survey, how much is that going to cost? £500? More? I wouldn't drop 10 grand on a boat of that age anyway, but ask yourself, do you have money to burn? It will come back needing attention, then its got to come out again and be cleaned and blacked. Its winter in a month or two .. that means you won't get round to that for a few months, spring likely, then you've got to pay mooring for the intervening time and so and on.
Just wait, save a little longer, get the right boat. If its too good to be true, it is. 10k is a lot of money for that size/age anyway. You could have a 57ft semi trad, build mid 90's for £18k. Trouble free. You can save that between now and summer 2009, by which time the recession will be in full swing and people will be shedding assets like mad.