When proposals for integration of public transport in London were published in 1930, the Met argued that it should have the same status as the four main-line railways, and it was incompatible with the UERL because of its freight operations; the government saw the Met in a similar way to the District as they jointly operated the inner circle.
Da der blev udgivet forslag for integration af offentlig transport i London i 1930, argumenterede Met for, at de skulle have samme status som de fire fjernbaner, og at de var ukompatible med UERL, på grund af deres godstransporter, mens regeringen anså Met på samme måde som District, da de i fællesskab opererede den indre cirkel.