Crussh CEO Shane Kavanagh has announced he will stand down next month after four years in the role, to "take on new challenges".
The healthy food and juice chain said executive chairman Jonathan Hart will lead the business while a new CEO is recruited.
During his time at the helm Kavanagh grew the company from 28 to 35 sites, including Crussh's first venue outside London.
He also agreed franchise partnerships with travel hub caterer SSP and contract cater Sodexo as well as launching a retail range with Sainsbury's and partnering with WeWork to provide workplace catering across the capital.
Hart said: "Under Shane's leadership Crussh has successfully evolved a strategy of franchise, concession and product supply, which is now delivering significant results. In tandem with this, Shane has navigated the core business through the most turbulent times ever faced by London's food-to-go marketplace.
"With the prospect of rapid growth for our product supply business, we now have a fantastic opportunity to develop Crussh as a national and international fast moving consumer goods brand alongside our company-owned, franchise and concession stores.
"Crussh has the potential to significantly build on its leadership in the healthy food-to-go sector and we are looking forward to finding someone with the skills and experience to take Crussh onto this next exciting phase of our development."
Kavanagh will retain an advisory position whilst a new CEO is recruited.