Sevenoaks pointer to Biggin
While I was doing my ATC flying scholarship during 1969 at Biggin Hill, I seem to remember in the vicinity of Sevenoaks there was a large painted arrow that indicated the direction back to the airfield.
It's a long time ago now and I can't find any trace of it on Google maps, so house building or the M25 might have erased it, but does anyone know just where it used to be?