The B415 is a short urban link in Notting Hill, west London. The road was originally unclassified; however, the B415 number is the first B4xx number to be allocated in central London following the original 1922 classification and therefore it can be assumed the number dates to the late 1920s.
The road starts at traffic lights on the B450 Ladbroke Grove and heads east along Elgin Crescent, a tree-lined residential avenue. This part of Elgin Crescent is dead-straight; the curved section is the unclassified section to the west of the B450. One block further east a mini-roundabout is reached and the B415 turns right into Kensington Park Road. Whereas the left of the road is fully lined with housing there are gaps on the right, presumably to accommodate the back gardens of houses in the side streets.
At traffic lights at the junction with Ladbroke Gardens we bear slightly left then continue on southeastwards along more of the same. We pass Ladbroke Square Garden (an actual public park) on the right. As we pass Kensington Temple the lanes narrow to allow a taxi stand (complete with cabman's shelter) in the middle of the road and we end shortly afterwards at a mini-roundabout on the A4206 Pembridge Road just north of Notting Hill Gate.