Thanks for all the replies I have just e-mailed one of the file storing companys to see how much it would cost to store the files.
Hi Robbie,
IMHO a small fireproof safe in your house is probably the best option. They're not too expensive and I think I've seen people mention on AAM that they can be put in the floor.
This previous thread is good for info on the important docs especially this post.
If you run the search option on this subject I think there are a few other relevant threads available.