At ten minutes to four on Saturday 1 October Circuit de Spa-Francorchamps in Belgium will echo to the sound of one hundred grand touring cars leaving the start-line.

During the next six hours, giving time for driver changes, refuelling, and safety car interruptions, around twenty per cent of the entry will fall by the wayside leaving the rest to charge on into the dusk, and then, the darkness.

Okay, so we all know, excepting miracles, Ford GT40s are going to finish 1,2,3. But the rest of the top ten, and class winners, is open to conjecture.

The Lotus Elans are very quick, and the Mustangs, real sloggers, as indeed are the TVRs. The Barton Racing car, with its three experienced drivers therefore could well spring a late surprise, so keep an eye out for #38. Live timing will be available throughout the meeting via the official website