In his speech, to be read this afternoon at the company's AGM in London, Next Fifteen's CEO Tim Dyson will say: 'I have to announce that after seven years as chairman of Next Fifteen, Will Whitehorn has decided to step down.
'The group would like to thank Will for his contribution to the business over the last seven years. During this time, the company has completed six acquisitions and has seen revenue more than double.'
Dyson will confirm the organisation has started a process to find a suitable replacement for Whitehorn and hopes to have that person on board by May of this year. Whitehorn will remain on the board until this appointment is made.
The news comes as Next Fifteen, which is part of the same group as Lexis PR and Bite Communications, reported a 'good start' to the current financial year, ahead of its interim results expected on 15 April.
Dyson will add: 'We expect the interim results for the six months to 31 January 2011 to show good organic growth and improved profitability, boosted by a strong performance from our US technology and consumer PR businesses.
'The financial year 2011 is poised to be a significant year of growth for our group with market expectations of double-digit profit and revenue growth. The good start to the year and the positive momentum we are experiencing leaves the group well placed to meet these expectations.'