Hi Hillary
Not sure what you need in terms of "training"... are you maintaining doing centuries? or working up to them?
You may wish to visit 2 UK forums to see what's on:
http://www.cyclechat.net/forums/cc-i...and-events.47/
http://yacf.co.uk/forum/index.php?board=4.0
People do post about organised rides e.g. sportives too so if that's what you're looking for, you might be in luck.
I suggest posting to either/both of these UK forums letting people know where you'll be and when. You should get some good replies from local people.
Good luck - and have a great trip - hope the sun comes out for you!