Some time ago someone told us about the lions "message in a bottle" scheme.
Tonight it was kindly delivered to me and i have to admit i am impressed.
Its just a small screw top plastic tub and inside was 2 green cross stickers and an information sheet - you put one sticker on the door and one on the fridge - when you have filled out all your info you put the plastic tub ( about the size of a salt shaker) into the fridge then when the emergency services come they are aware of where to look for your details.
if anyone else wants one heres the link
by the way they are free.