I wondered why we'd been seeing so many low flying planes out of the office window.
Will Blackfriars not continue to be marked as a station to change for rail services to Gatwick? On the S-Stock does the route map still show Farringdon and Blackfriars as stations to connect to airports?
It was about the only way people might get to realise that instead of taking the circle line around, you could take a shortcut by alighting at Farringdon and taking Thameslink to Blackfriars, or vice versa.