Not South London, but I've seen FOUR new-to-the-area earlybay's in the last week.
Two buses at one address near Weybridge (a blue & white crossover, and an orange & white 71 I think), one bus in Hersham (pale blue & white 71), and a 68 Westy in Walton (near the river).
This is the 68 westy (crap photo taken on my phone) - but it looked pretty solid to me