Amazing to find some recollection of motorsport at Heston. Yes, what I saw was on a section of peri track that ended near the top of the school playing field. It was a section that involved a U turn where the track ended and runing back towards the start.
On an even more bizarre note I assited in the removal of fish from the last remaing section of water before landfill and the M4 Services destroyed it. The fish were caught by a team of anglers from the Bath Road Piscatorial Society and transported to a gravel pit in Colnbrook/Poyle in water-filled metal drums in the back of a van.
Sorry to get this thread off topic - I now see there is a separate thread for general Heston/Hounslow/Hanworth matters.