Launching successfully in 9 cities, black cab booker Hailo has recently celebrated its first birthday and revealed aims to expand into 100 areas by 2015. Now boasting a driver base covering almost half of London’s 23,000 black cabs, and registered passenger numbers of 150,000, Hailo has sent out five taxis offering free journeys for the day in central London as an anniversary treat. 

Alongside the global success of Hailo, the London-focused Addison Lee taxi  app also has an impressive total of 350,000 downloads. Working to a similar concept of using your smart phone to hail a cab, Addison Lee divulgesa remarkable £50million of sales through simply using this piece of technology.