I had originally planned to leave for Oxford directly from Heathrow Terminal 5 on my booked connection from Slough with a seat reservation, but as
Tag: Inter-Terminal Transfer
TfL Rail + Heathrow Express from Heathrow Terminal 4 to Heathrow Terminal 5 by Free Inter-Terminal Train Transfer
To kickstart this trip, I decided to explore the free Inter-Terminal Transfer trains around Heathrow since it was, well, free. This also allows me to get