Commercial Street is road in central London that runs north to south from Shoreditch to Aldgate[?]. The road is on the London Inner Ring Road and as such forms part of the boundary of the London Congestion Charge zone. The road is also an informal boundary between the City of London, the financial centre of London, and the East End of London, which has conspicously less wealth.
... stations, all of which were at the far end of the Metropolitan Line, and stretch the definition of "tube station" a little:
Waddesdon tube station[?]
Quainton Road ...