Easy to fit and use. Seems a well made product and is kitemarked for insurance purposes. If I had a criticism it would be that it only comes with two keys, third would be useful.
Installation was simple and required a minimum of tweaking to get it to fit (it was replacing a non kitemarked lock). The appearance once installed is very good with a polished brass plate on the edge of the door, as to security it seems safe but I guess short of getting a locksmith to try breaking in I will never know - at least the insurance should pay out!!