I did randomly ran into this series of painspotting humour books, and aren't I glad I did. Pains on Trains, Pains in Office, and Pains in Public take the piss out of all the nasty, shady, and just generally weird people you would encounter on a day to day basis. Subtle yet to the point, you would have thought that Andrew Holmes wrote the series entirely based on your personal experience.
Each book focuses on a specific environment (trains/offices/public), but all equally hilarious. The office one is more universally applicable, because you would find pretty much the same ensemble across the globe. The train one and the public one, on the other hand, have more factors in it that is uniquely Britain, or rather, uniquely London. Like the City Boys for instance, you kind of need to have been near the Square Mile to appreciate its meaning.
Go on, grab a copy from Paddyfield, and start painspotting to make your mundane daily lives just a tad bit more colourful!