Silverstone British Grand Prix

Here are a few vintage pictures from the Silverstone British Grand Prix.

Can anyone identify the year or the riders?

Picture One – The first picture shows a pair of 250cc Yamahas which I think were brought along by Kenny Roberts. Not sure if Kenny raced them at this event but perhaps someone can shed some light on this.

Picture 2 – Like father, like son? This is Graziano Rossi (No 15) father of Valentino tipping it into a corner.

Pictures 3 and 4 – Anyone identify these guys? One of them is Graham McGregor from Australia If anyone has an old programme that they can scan and load a few pages onto the MCN web site it would be greatly appreciated. Regards Kerry Green