The investment unit of Sir Brian Souter has reportedly made millions of pounds after Sunseeker International was sold to Dalian Wanda Group for £320 million.

The Chinese conglomerate is acquiring a 91.81 per cent stake in Sunseeker International, which is a leading luxury yacht maker from Poole, Dorset. The remaining stake will be held by the existing management of the company. Souter Investments had acquired a majority stake in Sunseeker in 2010 for £9.5 million as part of the total £25 million cash infusion into the company in association with Dublin's FL Partners and other UK and Irish investors.

Souter investment firm was the largest stake holder in Portofino Yacht Investments that held the largest stake in Sunseeker. Souter Investments and its associated parties owned about 31 per cent stake in the company in Portofino.

Sir Brian said, "This is a welcome announcement. Sunseeker already exports nearly 100% of its yachts to many countries round the world. Wanda will be a wonderful partner, particularly in helping it unlock the substantial potential inherent in the developing Chinese boating market."

Sunseeker was established in 1968 by Robert Braithwaite and now employs more than 2000 people. The company's offering come with a starting price of around £400,000 and going up to millions for more advanced models.