Marino joined Kensington earlier this year from Nationwide Buiding Society and replaced Kensinton's former director of marketing and strategy Alastair Pate.
John Maltby, chief executive of Kensington Group, said: "Louis has decided he wants to move on and feels he is perhaps more suited to the mainstream lending market as opposed to the specialist sector. We wish him all the best and will be looking for his replacement immediately."
