"Just fitted this to an external timber door so can't comment on reliability but it looks and feels well made and comes with really good fitting instructions, including a template for the door and frame cut outs."
"I have used these before and know they are good quality. You can get much more expensive locks, but I can't see what advantage they are. This is 5 lever, as are most of the expensive locks. I have fitted quite a few locks in the past and know you have to have the right tools to do the job and the time to get it spot on."