Bob Hewitt will manage the transition of roles until his retirement from the position of CEO in December 2016.
He said: "We have been planning succession for some time. David has significant knowledge of both the Klondyke business and the garden centre industry and I am confident that under his leadership and my chairmanship we can continue to drive the business forward."
Dorothy Gault said: ''Bob has made a significant contribution as chief executive and the Klondyke business has made great progress under his leadership. I have every confidence that the core strategy will continue to be successful under the future leadership of David and the chairmanship of Bob."
The Klondyke strategy of redevelopment and refurbishment of its existing portfolio of centres is on-going. Following the redevelopment of Mayfield Garden Centre, Kelso in the autumn of 2014, the redevelopment and refurbishment of Stokesley Garden Centre is now underway. In addition and following the closure of Savilles Garden Centre in Garforth, Leeds in July 2014, a new build is scheduled to start in late autumn 2015.
Looking ahead, redevelopments are planned for the centres in Edinburgh, Polmont and Northwich. It is envisaged that the Polmont redevelopment will also encompass an upgrade of the current Klondyke head office facility.
Hewitt said: "In recent years the redevelopments at Northallerton, Astbury Meadow, High Legh, Wilmslow and Kelso have been hugely successful in terms of sales, profit growth and return on capital investment. The five year Redevelopment Plan will ensure that sales and profit continue to grow."
Klondyke Group has 24 garden centres, annual sales of £48m. and EBITDA of £6.5m. (full year to September 2014)