5 Lever Mortice Deadlock

Our doors have levers 5 / bolts along the side edges inside - the metal tracks right from the top down with the levers at various points. I can not find the kite mark - is it still a deadlock lever 5?

nope, a five lever mortice lock is like the picture on the link below ... levers in question are inside the lock, not the things that jump out of the door at various locations. This seems quite sure too well!

These are 5 lever mortice deadlock -
http://www.amazon.co.uk/dp/B000FTCFKY/?t ...
http://www.amazon.co.uk/dp/B0009WA0E0/?t ...

TP not be confused with a lever 3 -
http://www.amazon.co.uk/dp/B000TASXRI/?t ...

Let the key!
Is it like a top five Chub lever?
If so, look at the wear marks on the teeth of the key count.
From your description, you probably have a lock with a key Euro Yale type.
With either type of lock it simple to unscrew the lock take to turn the key and see what moves.

not as said before the five levers in the lock itself.
What you describe is a five-point locking system they are accepted by the INS as co theyn are very secure

ITS A LOCK Doormouse