Hello John
I was hoping to have an answer to your question about the meeting at the Owl by now but unfortunately the people who live next to both the Owl and Lippitts Hill were both otherwise engaged that night and did not see it as a major issue to attend.....
They think they may know someone who attended but were not expecting a mass meeting out of the event..... They will check.
The meeting was one of a regular 'meet the people' get together's run by the Conservative Party [politics] rather than a protest meeting as such.
They see Lippitts and helicopters at 2am as a fact of life - just like living by Heathrow.
They were tickled that the question originated from Oz though [I did explain the connection]!