Just been looking through some old photos online and also using a book - Endurance Racing at Silverstone in the 1970s & 1980s by Chas Parker and came across something a bit unusual.
The sponsorship of tobacco in 1986 is not present on any cars. But the strange thing is that it did appear later on at Brands Hatch that same year. Plus it was back again the next year. Any answers to why this happened would be appreciated.