I didn't spot anything else of note around that time Moose, I must have missed the one that you saw. By the way, what are you usually riding? I am sure that we must often pass each other. Currently, I am usually the bloke on the tatty blue steel framed thing with brown bar tape.
Today, in the morning, what looked like a Harvard; later in the early another Spitfire. The sound of a low flying jet brought me out of the garage to see briefly between the houses what appeared to be to my un-spectacled eyes a Hawker Hunter with a decidedly un-military paint job, then a couple of Pitts type biplanes. Later on my late afternoon ride an unidentified aircraft with a radial engine and tapered wings. I stopped to look but really only caught a glimpse from the starboard quarter...looked like a wartime US aircraft but I don't know what. The DH Dragon Rapide was still trundling about the place in the late afternoon, providing joyrides.
I presume that most of these, especially the Hunter, were looking in on Headcorn on their way to and from other display - probably Eastbourne.