The package that arrives in "Battleground" has San Francisco misspelled.
In "Crouch End" the registration plate of the London taxi that took the Freemans to Crouch End was "LN58 WIN" the "58" plate will not appear on UK vehicles until September 1st 2008 .
In the "Crouch End" segment the Freemans are at an outdoor café in London the afternoon before heading to Crouch End. There is a clear shot of a passing Melbourne (Australia) tram in the background.
In the "Crouch End" segment the Freemans are in a Cab in London heading off to "Crouch End". An Australia Post van can be seen passing them on the street.