Laptop maker Rock Computers, which went into administration earlier this month, has been acquired by Stone Group for an undisclosed sum.

Stone said it will continue to sell machines under the Rock brand, with the acquisition enabling it to offer a larger range of high-end laptops to public sector customers. "This acquisition is great news for Stone and for our customers, because we can now offer a much wider portfolio of laptops," said Stone chief executive James Bird.

The company has also committed to providing ongoing warranty support for existing Rock customers.

Former Rock chief executive Nick Boardman, who will join Stone as director of its mobile technology division, said: "It is vital that customers’ historic warranties will be supported going forward. Everyone can continue to buy Rock products with confidence."