Hi Anemone
You did read about the RHS apple days as I posted about them and certainly the Wisley one is in Flighty's link under Surrey:
"Friday October 16th – Monday 19th RHS Wisley, Surrey A Taste of Autumn includes apple tasting and apple identification day called A Taste of Autumn"
I went a couple of years ago and got mine all identified and had a wonderful time tasting all the varieties - I was amazed by the variation in taste. Very useful for people choosing new apple varieties. I decided I would like a Worcester Permain, I had never tasted one before.
They also had the most wonderful squash soup made with Crown Prince and were giving out the recipe, my family's favourite now!
If you are not near Wisley or any of the RHS gardens you could see if there is something near you in Flighty's link, it is well worth it and a good day out.
Good luck
T.