I have the Yale door that has the Superior Series keys which enforces you to have a pin code to be able to cut replacement keys.  I was unable to find anyone on the high street who was able to cut additional keys.  So went to the recommended online Yale website to order new keys.   1.    Online key cutting very expensive £40 for 3 keys 2.    The keys you eventually receive are not like the ones that come with the door (Yale branded solid metal), instead a ugly cheap plastic key 3.    Delivery is advertised as within 4 weeks, but you will be lucky, mine took over 6 weeks and I had to chase twice 4.    Every time I phoned up customer service to find out where the keys were they promised to phone me back, but customer services could be bothered to phone back 5.    Unsecure, keys are delivered with the combination code allowing for copies to be taken if keys were intercepted