Which is what I did in my small landing. There is no conventional socket so I have wired one into the lighting circuit next to the landing light in the ceiling (this is the point I expect you are all spitting out your cocoa).
No, I have just has my coco
The last time this was discussed, it was agreed that it was fine to have a 13amp socket for a special purpose, connected to a lighting circuit - especially so if it was marked up with it's current limit or special purpose. I myself have such a socket, marked 'phone only' which is fed from a 6amp MCB feeding the stair lift charger. It charges the phone on the landing window shelf. There is another socket on the 32amp ring on the landing and a third one on the ring at the bottom of the stairs for vacuum cleaners etc.