Tech firms struggling to grow in the Capital

70% of London's tech firms have struggled to grow or expand in the capital, according to research from YouGov.

The most commonly cited obstacles to growth are the high costs of running a business, a lack of suitably qualified staff and a squeeze on affordable office space.

In the past year, property rents in Shoreditch's tech heartland have soared by 46%. The findings could be considered a blow to the government's dream of making the area, known as Tech City, the world's home of new computer firms.