"GT" gurgled happily, sounding much like they were saying:

Double red lines? What are they?

They signify "No Stopping" on London's designated "Red Routes".

http://www.tfl.gov.uk/roadusers/fine...ons/10185.aspx

Oh and whats wrong with the standard double yellow lines - they mean no
stopping too!

FFS... No, they don't.

http://www.direct.gov.uk/prod_consum...ssets/@dg/@en/
documents/digitalasset/dg_070563.pdf