We need to install a safe bathroom lock which can secure the door from the inside for privacy but still be opened from the outside in an emergency. We live in an old property and the relevant door currently has an old fashioned cast iron door latch and a separate cast iron bolt. I've had a look around and can find bathroom locks with the functionality I'm looking for but they are all really modern and will look a bit odd. Aesthetics is not my main concern, safety is, so we'll install one of these if it is all that is available but if could find something that also looked in keeping that would be even better so before we go ahead I just thought I'd ask if any others have had this problem and what their solution was? Are there locks of this type but more "old fashioned" in appearance and I so where are they available?