Why end off in Honor Oak when you can go for the whole thing?
P12 may as well be rerouted elsewhere, I don't see many people using the route from Brockley Rise / Honor Oak Park. Most of the people that use this route go Peckham anyways, the 63 also goes Peckham so like its a no brainer. If the nunhead residents find the loss of a P12 to be hurtful to them then just cut it back as far as Brenchley Gardens or something (build a new stand). you get the point, uh yeah. g'day.