Re: The question is...
My home insurance demands a multi-point locking system on both front and back doors in the small print which is one up from the 5 lever mortice locks they used to require. I would also recommend sash jammers for upvc doors and windows, not that they will help you that much as someone I know found out when they just removed the whole side frame of the front window to get in and take his car keys, if you ever need a reminder to make sure you turn your alarm on at night then that is it. Luckily he got the car back, always sets the alarm now.