UK MD of PR Chris Davies is swapping places with the MD of Grayling's Asian operation James Acheson-Gray this week.
At the same time Robert Fenner, currently a director in London, will become director and head of office at the agency's Bristol office.
The job swap follows Grayling's merger with sister agency The Global Consulting Group in March. The new consultancy, Grayling Global, has a combined staff base of 200 and more than £17million of revenues.
As part of the merger, group chief executive Nigel Kennedy was appointed CEO of the new company.