Hi would a spy hole in a door with no information require a new door as the integrity has been compromised? The spy hole has also been installed 1200mm in the door which is low down. This is hospital door set which is a leaf & half and double acting. The half leaf has a lock at the top which we are unable to open as no one has a key. Is a lock of this sort allowed on the half leaf.?

Does the door security viewer (spy-hole) have an intumescent gasket between the viewer and the core of the door. If it has, that's a good sign that its compliant. 

If the door is on an escape route, the lock should be a keyless egress (thumb-turn etc). 

Removal of the viewer and gasket will enable you to inspect the core of the door too.