I also went to Biggin Hill today to see the Vulcan. I checked the official website, but I did not really want to pay £21 for each adult, as there were no concessions for OAPs. An enterprising local farmer was only charging £6 per car for a field with a good view of the display, so I parked there instead.
No Vulcan to be seen on Sunday, and LBC 97.3 and 1152 did not seem to mention it, although they were supposed to be the official air display radio channel according to local signs.
Oh well, I still hope to see the Vulcan in the air before the end of the year.
Keith.