The Most Out of Station Interchanges In One Journey

An OSI is an 'Out of Station Interchange' on the TfL Network where you can leave one station ... and walk to another but it charges as you as a continuation, rather than two separate fares.

There are only certain places on the system where you can do this, and I thought I'd try a journey that included as many as possible ... and explain how they worked as I went  can I get from Harrow & Wealdstone to Barking by a very convoluted route and only pay for one fare?

Oyster Rail website: https://www.oyster-rail.org.uk/

And the complete list of all OSI's: https://www.oyster-rail.org.uk/osi-list/

TfL Maximum Journey Times: https://tfl.gov.uk/fares/how-to-pay-a...

• #travel_events
• #london
• #london_tube
• #london_underground
• #oyster
• #tube_map
• #oyster_fares
• #contactless_fares
• #osi
• #out_of_station_interchange
• #tube_connections
• #harrow_and_wealdstone
• #barking
• #geoff_marshall
• #geofftech
• #all_the_station
• #vicki_pipe
• #vicki_explores
• #oyster_rail