6. When you don’t panic when confronted by rail-replacement buses.
7. When someone asks you for directions and you actually know the answer.
8. Finding the quickest tourist-free route between Covent Garden and Leicester Square.
9. Sitting in a park that nobody else knows about.
(Or a part of the Heath).
10. Spotting Gilbert and George in Mangal.
Or Tracey Emin on Brick Lane. Or Louise and Andy on the Kings’ Road.