Due to the proximity of the Lloyd's market, a number of other insurance firms and brokers, such as Towers Watson, also have offices on Leadenhall Street.
EMB was acquired by Towers Watson on 1 Feb 2011.
EMB will likely form the non-life consulting division of Towers Watson.
All software will become the licensed property of Towers Watson.
Towers Watson & Co. is an American global professional services firm.
Towers Watson's corporate offices are located in New York, New York.
Towers Watson has 14,000 employees in 35 countries and is expected to have revenue of US$3.2 billion per year.
Rash Bhabra, head of corporate consulting at Towers Watson, said: "Pension assets and liabilities are two very big numbers which don't always move together.
Towers Watson (21st Floor)
Stephen Green of Towers Watson, the actuary, said: "High earners are being presented with complex choices.