£11.7m in 2011.

Neomobile

Headquartered in Rome, but with offices in London, Neomobile provides mobile services such as messaging, dating, games, apps and music for network providers in over 70 countries.

Founded in 2007, the company also provides mobile payment technology and users spent €250m through Neomobile’s services in 2012.

Mind Candy

Often seen as the poster child of London’s Silicon Roundabout scene, Mind Candy is the games and entertainment studio behind hit kids game Moshi Monsters.

The company was founded in 2004 by colourful entrepreneur Michael Acton Smith, the founder of online gadget retailer Firebox. Mind Candy recently revealed that Moshi Monsters has become the most licensed property in the UK and the firm is currently working on a new entertainment property to follow it up with.

Made.com

Backed by lastminute.com co-founder Brent Hoberman, Made.comusers order food from over 18,000 local restaurants in the UK. Founded in Denmark in 2000 but now headquartered in London, the firm’s UK operation saw profits more than quadruple to £9 million last year thanks to an 87% jump in orders.

The firm, which operates in 13 countries, is often mentioned as one of the UK tech firms most likely to file for a stock market flotation next.

HouseTrip

Another AirBnB like service HouseTrip lets users rent out their homes online and travellers stay in them. 27-year-old chief executive Arnaud Bertrand founded the Tottenham Court Road-based firm in 2009.

HouseTrip currently offers 250,000 properties in 153 countries and last year processed £48m worth of bookings. Earlier this year Michael van Swaaij, former chief executive of Skype and European head of eBay,