1982 Oulton Park and Ayrton da Silva, as the name he was still being entered under, although by then the signwriting on the car read 'Ayrton Senna'
I hazard a guess that's later in the season. The EFDA badge has been added to his overalls and car.
I was at Zolder for the Euro FF2000 round that year and the Senna myth was already in full swing. I think it was just after the Snetterton race where he'd lost the rear brakes but still won. Everybody knew this guy was special and the feeling was that he was going to be hard to beat. Ironically the car broke down early on and Senna didn't finish.