The guy selling the books on the stall is in fact Von Mozar himself.
I have not purchsed his book yet. I have also seen him selling his book from his stall in Peckham.
I heard him being interviewed on a show on Playvybz Radio last year.
He set up his own publishing company Called Waterbuck Publishing
Waterbuck Publishing
He aslo has a myspace page
MySpace.com - Von Mozar - 100 - Male - South London. Brixton: Original P.D.C, UK - www.myspace.com/vonmozar