Looking for some advice, I have the following, wooden rear external door, must be about 50 years old with big bolts inside it and a mortise lock. It's an Eyesore and knackered! Front door is solid hardwood, not sure what kind, it has a Yale style lock and a mortise, the mortise is knackered. Been looking to change the yale style lock as I keep locking myself out the house banging the door shut behind before realising the keys are still on the couch. I'd rather not change the front door if possible as cash is fairly tight. Is there a type of lock similar to the Yale style that doesn't bang shut and requires a key to lock it from both sides? Or is there a mortise style lock that doesn't have the big huge key? Unfortunately both new locks would require to fit into the existing cut outs. Or would I just be better buying a new door either hardwood or UPVC? What would you recommend for the back door,solid wood or UPVC and roughly how much should I be looking at paying for one fitted. Any help appreciated.