SThree has become the most valuable listed IT companies in the UK following its admission to the official list.

The firm, which joined the stock exchange last week, is worth £273m. Its closest rival in the specialist IT staffing market, Spring is worth £93m.

Unlike Spring, SThree operates under 12 brands, with the three largest being Computer Futures, Progressive and Huxley.

It also tends to service the small to medium-sized businesses instead of focusing on large corporate clients.

The firm is listed the London Stock Exchange’s main market and its ticker symbol is STHR.