His responsibilities at the agency will include increasing the agency's global portfolio, particularly in Asia, developing the existing client base and growing the client services team.
Kenward said: "Banks Sadler is not only widely known and respected within the industry but has a global client portfolio second to none. The chance to be a part of the future success of the company, and to drive growth with both existing and new clients, was too good an opportunity to pass up.
"I have inherited a fantastic team who are as excited as me to be at the forefront of ensuring the Banks Sadler brand is front of mind when buyers are looking for event and venue support across the globe."
Banks Sadler CEO Leigh Jagger said: "We are absolutely delighted to welcome someone of Robert’s calibre to our team to help support our continued growth.
"He joins us with a wealth of experience to grow our client services team. There will be a great deal for him to get his teeth stuck into over the next few months with some exciting events on the horizon in Asia and he will bring valuable skills to the global sales team.
"His primary remit will be to develop new business streams and offer support on long-standing accounts."
Kenward joined Sledge in October 2014 to take on the newly created role of commercial director and drive the agency's offering in the UK, UAE and Brazil.
Prior to joining Sledge, Kenward spent four years at MCM Creative as commercial director.
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