So where is the petition?
I suspect Newcastle is like a lot of other places - they can make more money using the space for better things than accommodating spotters. When my wife and I started spotting in the 50s aviation was very exciting and the roof gardens at Heathrow were always crowded. However, when I went to work there in the 70s and my wife would bring our two sons up to meet me and do some spotting, the roof gardens were almost empty. Interests change - aviation is a way of life now for the majority of people so they do not see the need to go and watch the planes....