Advertisers have come up with a jumbo way of helping brokers reach their audience - advertising on plasma screens mounted on pink elephants.

The lumbering beasts (which are actually pink buses) pick up passengers from the long-stay car parks and deliver them to Heathrow's terminals.

The screens show commercials in between other BBC broadcasts on a ten-minute loop lasting the length of the journey. In case any brokers decide to invest in this exciting marketing opportunity, here's hoping the pink elephant doesn't turn out to be white.