Start me up - A cluster of start-ups in east London is thriving. All they need now is a big success

TO SPAWN the next Facebook or Twitter, first launch a start-up contest. Promise the winner a sizeable equity investment, say £1m ($1.6m), and let firms from all over the world compete. Among the entries there will surely be a hit. This is the idea behind the Million Pound Start-Up competition put together by Digital Shoreditch, an event organiser. More than 1,000 hopefuls from 77 countries have signed up.

Read the article at: http://www.economist.com/news/britain/21587268-cluster-start-ups-east-london-thriving-all-they-need-now-big-success-start-me-up

Given the insights proposed by the article, what are the key drivers to succeed within a business ecosystem?
What have been the major trends start ups within the London Tech City had benefited?