Andy Corcoran, currently operations director for leisure at parent firm Parkwood Holdings, will take over as managing director. Glendale handles grounds upkeep contracts for local authorities and private firms across the country.
"I'm stepping down to three days a week," said Hewitt, who remains part-time executive chairman of Parkwood. "I'm 63 and have reshaped the company over the past two to three years. It is in quite reasonable order to progress for the next three to four years."
Hewitt, who formed Glendale 22 years ago, said: "I will still keep a strong interest in the business. The changeover is a process not an event that will take place over the next six months as Corcoran takes up the reins. We have a sound management in place."
Corcoran joined Parkwood in 2007 having been sales and marketing director for a professional football club. He has an extensive background in services operation within global and multinational organisations and has a law degree and an MBA.