All kitchens are bespoke to a certain extent. Most kitchens won’t be fully made to measure though, and if you want to adjust the layout or the design, you will often need to chop off certain bits of cabinets, or take our shelves to adjust the configuration. This can be problematic, and you just might not get as neat a finish as if you were to have everything tailor made.
When you are kitchen shopping, you can also get plans made up using CAD design. Try getting one from a bespoke kitchen company to see how it differs. They will usually make the cabinets and towers themselves, so they can decide on the design of the frontals and make everything so that it fits your kitchen perfectly. This is ideal way to make sure you get as much storage as possible into your room, and that it has a neat and tidy finish.