First ever Turnbull clone sighted! He was getting on a number 30 bus near Mr T's own place of work. He even had similar facial hair and his gait and build were also close. He looked deeply unhappy with a downturned mouth.
Are you sure that wasn't Andu having Nativety 2 flashbacks?
Curious... It had always been believed that flaws in my biodata meant that an attempt to duplicate it would inevitably lead to a spontaneous destabilisation back to the origin point - in short any duplicates should spontaneously never have happened at all at some point along their timeline. If someone has managed to delve enough into esoteric alter-time states to stabilise them... I shudder to think what else they might be capable of.