Jean Charles de Menezes didn't leap the ticket barrier or run; and he wasn't wearing suspiciously bulky clothing as police claimed at the time. Instead he sat down in a tube carriage, then got up as people with guns ran in and pinned him down. He'd been mistaken for Ethiopian-born bomber Hussain Osman who looked nothing like him, but lived in the same block of flats.
Menezes wasn't filmed leaving the flats because the surveillance officer was on a toilet break. He was trailed to Brixton tube where an undercover officer followed him off a bus and then reported him doubling back and getting back on the bus. Classic counter-surveillance! Or a closed tube station, in fact. When Menezes approached Stockwell station, the Ops room asked another surveillance officer for a "percentage certainty" that the target was Osman. The officer said the question was ridiculous.
Still no individual held to account.