In an industrial estate in South-East London, Yianni Papoutsis is serving up fantastic burgers from The Meatwagon. The half-Greek, half-Irish, carpenter/caterer has a desire to improve London's slowly blossoming street food scene. He's knowledgeable about burgers, having traveled around the US of A on a search for brilliant food at low prices in curb-side locations, sampling some of America's best hamburgers en route. More