Aon Consulting is merging its consulting operations into a new one-stop pensions and investment division.
Former regional director for London Maurice Dyson will head the new division.
The move brings the actuarial and benefits consulting, pensions administration and investment consulting practices together.
Midlands regional director Steve Carlisle will succeed Dyson in the London post.Gordon Clark will head the investment practice under Dyson.
Aon Consulting Chief Executive Ron Amy says: "The setting up of this new division will help exploit the close synergy between the three core areas of the business and ensure that we continue to provide our clients with the highest possible standards of service."