Geoff Marshall is a video editor for the website Londonist.com and tour guide for the London Transport Museum.
He is also a vlogger and the latest video for his YouTube channel shows us how you can travel from Heathrow to Upminster for only £1.50.
Although in the video he travels from Hatton Cross to Elm Park, the principal is the same
DOWNLOAD! His PDF table which lists both the single oyster/contactless fares AND show the caps from his website, here: