The A4206 is a minor A-road in west London.
The road starts at traffic lights on the A402 Notting Hill Gate, just west of the entrance to the tube station of that name. The road heads north along Pembridge Road and almost immediately reaches a mini-roundabout where the B415 bears off left along Kensington Park Road.
Pembridge Road bears gradually round to the right as it passes the suburban villas. By the time it is running due east it reaches a set of traffic lights. Here the road zigzags across a staggered crossroads into Westbourne Grove, which road also exists west of the lights. Due left is the A4207 whilst the remaining roads here are unclassified.
We continue east along Westbourne Grove, which is lined with shops, and soon cross the B411 at traffic lights. That road is one-way to the left, however, and we meet the southbound B411 at the next set of lights. The architecture on the right of the road now changes completely as we pass a number of blocks of flats. However, we're still tree-lined with urban villas on the left so it looks rather incongruous. Presently we lose the flats and then meet Westbourne Terrace at traffic lights. This is now the de facto A4205 as the official line of that road, which we meet at the next set of lights, is currently closed due to Crossrail.
The road crosses a bridge over the Paddington station throat and the Regents Canal then reaches a gyratory. The A4206 ends here on the A404. The A40 also flies over this junction but is not accessible from here.