Fidessa Group plc is a British-headquartered company which provides software and services such as trading systems to clients in the financial services sector. The firm also provides market data and related services to buy side and sell side financial services customers.

The company is headquartered in Woking with offices in London, New York, Boston, Tokyo, Hong Kong, Paris, Toronto, San Francisco, Belfast and Bahrain. It is listed on the London Stock Exchange and is a member of the FTSE 250 Index.

The Company was originally founded in 1981 as Intercom Data Systems (IDS): it was later renamed royalblue Group plc, and consisted of two separate operating divisions, royalblue Financial and royalblue Technologies. royalblue Financial concentrated on the financial trading platform that has become Fidessa today, and royalblue Technologies centred around two separate products - rostrvm, a call centre technology platform, and HelpDesk for Windows. It has been listed on the London Stock Exchange since 1997. In 2001 the company divested itself of the Technologies division and focused entirely on the Financial business.

With the group's core trading platform, Fidessa, being better known in the market place, the Royalblue Group plc changed its name to Fidessa Group plc following shareholder approval at the AGM held in April 2007. The change of name took effect on 1 May 2007.

Source: Wikipedia