Over three million people use the Underground every day. That makes both advertising and marketing on the Tube highly effective ways of getting a product or service into the public eye.

The commuter has become much more sophisticated in distilling the information he takes in on his way to work and so the advertiser has had to become more ingenious at targeting him. Ads need to be either extremely repetitive (continually punctuating his journey) or be extremely creative in order to catch his attention.

I tend to pay more attention to the latter category. I spotted the below ad for More >