The Gospel Oak to Barking Line (GOBLIN) is offering free travel to everyone that uses it between 31st August and 1st October 2019. This is as a 'thank you' to those who were caught up in the delays whilst new trains were brought into service on the line.

I went out to make some journeys to see how it worked, and how I'd get my money back when travelling on it using an Oyster card.

Also #SayNoToCalibri

More details on the TfL Page on free travel on the GOBLIN: https://tfl.gov.uk/modes/london-overg...

An OSI is an 'Out of Station Interchange' read up about those [and a complete list of where they all are] on Mike's incredible Oyster Rail website: https://www.oyster-rail.org.uk/interc...