Games retailer Green Man Gaming has been named on the government's Future Fifty list.
Unveiled by chancellor George Osborne earlier this year, the list matches qualifying companies with publicly funded schemes and incentives relevant to their stage of growth and specific needs”.
The overall aim is to help some of Britain's most promising companies make their way toward a successful flotation.
To be eligible companies have to be generating annual net revenue with a run-rate of at least 10m over the coming year and have net revenue that has increased by an average of at least 30 per cent year-on-year over the last two years.
Moshi Monsters creator Mind Candy also features.
"High-growth, innovation-led companies are the lifeblood of modern economies," London Stock Exchange chief executive Xavier Rolet stated. "Supporting entrepreneurs, and keeping the companies they create in the UK, will keep Britain growing.
"We need to provide the right mix of finance for every stage in a company's development to make doing business and accessing capital markets in Britain as straightforward as possible. The new concierge service, Future Fifty will do exactly that, helping entrepreneurs, promoting growth and providing jobs."