Pict Via: dyndns
'The Changeling' (named after after the first track on 'LA Women' by the DOORS) was one of the first Rat Bikes seen in London circa 1991. It was Built with a Turbocharged gsx1135 lump in a gs1000 frame. It was used for couriering in London and later even used with a trailer for touring all over eastern and western Europe.
The rider is probably the builder, "Bazza" (or known as basketcase3 from the youtube post below) but was made more legendary when it was ridden by Annie, a 'no prisoners' lady rider.(Thanks to Pen Part for the extra info!)