Unique Street Reference Number 14917820 is, to the best of our knowledge, a Restricted Local Access Road.
All the UPRNs which are associated with this road are shown. This does not necessarily mean that they have a postal address on this road. The USRN associated with a UPRN is, typically, the nearest significant public highway that the property is accessed from. Postal addresses may use a different street name.
It's important to bear in mind that UPRNs can overlap or stack. For example, a building containing multiple addressable units on different floors, such as a block of flats or a shop with a flat above it, will have a UPRN for each distinct unit. And an open air space, such as a park or square, can also have distinct addressable objects within it such as a kiosk or a structure. Given the limitations of a 2D map, you can't necessarily tell which of several overlapping or adjacent UPRNs is assigned to a specific item on the map.