He will depart at the end of January to “pursue other interests”.
"The decision to step down is with mutual consent and the company thanks Alan for his leadership, dedication and hard work during his seven years with the business," the company said.
Cosmos Tours was retained by the Mantegazza family following the sale of the Monarch Group to Greybull in October 2014.
Avalon Waterways and Archers Direct are sister companies of Cosmos Tours.
Former Monarch Travel Group chairman Hugh Morgan recently joined Cosmos Tours
