WIREDGOV

Commuters could be in with a chance of winning a range of top prizes if they can find the 100 stations hidden in visual clues in a poster.

The 'Look for Longer' competition, devised by the outdoor media owner CBS Outdoor, encourages lateral thinking and tests passengers' knowledge of the Capital as they travel around the Tube network.

The competition ran for the first time last autumn with 75 stations, but 25 more have been added this year.

Example clues include a road sign showing the number 007, for Tube station Bond Street, and a taxi topped with a candle to represent Hackney Wick.

Answers can be submitted at www.lookforlonger.com and prizes range from Nike FuelBands and GoPro wearable cameras to Beats by Dre headphones and a Samsung NX2000 camera worth £260.

The poster will be displayed over the next four weeks at 45 Underground stations including Canary Wharf, Euston and Oxford Circus.

With WiFi now available at Tube platforms, passengers can play and submit answers online while they wait for their train.

Last year's game attracted nearly 300,000 entries from all over the world.

Simon Harrington, Marketing Director at CBS Outdoor UK, said:'The first Look for Longer game set the bar high, and was always going to be hard to top.

Naturally we want its successor to be even bigger and better.'

Participants have until 15 December to enter at www.lookforlonger.com.

To ask for help, use the Twitter hashtag #lookforlonger.