The co-founder of spa consultancy Raison d'Etre, Rosamond Freeman-Attwood, and business partner Kasha Shillington have handed over control of the business to Anna Bjurstam, the company's concepts director.

Bjurstam will become sole owner of Raison d'Etre and will continue to run the business from the company headquarters in Stockholm, Sweden.

According to Bjurstam, the move was a "natural evolution" as Freeman-Attwood currently lives in Sri Lanka - where she is opening an exclusive retreat - while Shillington will be tasked with the sole responsibility of developing Resense - Raison d'Etre's joint venture with Kempinski Hotels.

Bjurstam said: "Since Raison d'Etre's inception, we have always provided clients with a dedicated, bespoke and cutting-edge service, so this was a natural progression for us all."

She added that the company is about to launch a number of new initiatives - including two new spa brands, one being a luxury product and the other a 'social spa' experience.

Bjurstam's plans also include the introduction of joint venture, revenue share and franchise agreements, depending on brand and client, allowing Raison d'Etre a greater degree of ownership for the spas it operates.