Another Frenchman pushes through the crowd to join him. He's an events organiser who I'd met earlier, and he's holding a large box wrapped in a bin bag. They're the fireworks he'd smuggled in from France the night before. They're Industrial Grade, whatever that means for fireworks.
I imagine that some lab-grown 29-year-old from Woking with a mind honed to identify individuals who fit the profile of Real Londoner (as conceived of by 50 opinion-polled racist builders and their wives in the Midlands) picks a stubborn local who can still somehow afford to live here and passes him along to some creative studio.