Setting a point of destination is not the easiest of things to do. A friend of ours lives in a remote part of Lancashire and their address does not feature! Similarly, postcode searches are not accurate.
Fed up with the thing! Have bought a Navigator series map and pencil, cheaper and easier to use.

Sony were once the best, but have since gone to pot! Virtually everything I bought was Sony, and one by one everything went wrong just after guarantee ran out! This put the cherry on the cake, I won't be buying Sony again!