Aqualisa chief executive David Hollander has left the business, according to a statement from the company.
Ian Plummer, non-executive director, will take on the role of acting CEO until a replacement has been found.
Hollander (pictured) took over the role of CEO in January 2014, which saw the company increase profits and revenue under his leadership.
Prior to Aqualisa, he spent six years at Dyson as managing director.
Aqualisa declined to comment further on the announcement.