On the BBC show Oakley and Blythen travelled through eight countries from Italy to Mongolia without the aid of phones, internet or air travel but they struggled to make it to the Essex commuter town on Thursday (4 June) due to tube strikes.
However, even though the pair, who are in-laws, arrived 30 minutes late for the event they received a warm welcome.
And despite the evening being originally scheduled as a 30-minute "In Conversation" session, the 30 guests in the room asked Oakley and Blythen questions for more than an hour.