Calder's Comfort Farm 3

The third of my fortnightly columns can be found on the New Statesman website:

I was excited when I saw pictures of Plane Stupid protestors on the roof. Not because there is anything remarkable about getting up amongst the gargoyles. Before all this nonsense about security came in - and I for one will not venture down Whitehall unless I am properly tooled up, given the people you are in danger of meeting - there was a whole tribe existing up there. They lived off pigeons and the occasional tourist who wandered too far from his guide.