There really is something for everyone in London. Anyone interested in sanitation, especially that of the public’s can take a walking tour on Tuesday, Thursdays, or Saturday afternoons starting at Waterloo and Euston stations, depending on the day of the week. £10 for students. This is one your where toilet humour will not be frowned upon. A funny and practical guide to London, covering history, social science, and the call of nature. Click here for more tour details.