Perhaps you could insert the words "self-made multi millionaire" before East End barrow boy.
There's nothing wrong with being a market trader -some of them are the most astute buyers and sellers you'll come across.
Alan Sugar is by anyone's standards an example of how someone from humble beginnings can make it good. He's become a legend in his own lifetime, and unfortunately - like many legends - he seems to believe that his personal charisma will suffice in all scenarios. In this instance his bluff has been well and truly called by someone who also comes from humble beginnings, and isn't averse to a bit of in-fighting.
It's the stuff that media editors dream about.