Located in Ebury Street, Belgravia, the 11-bedroom hotel is named after the British statesman and colonial administrator, the 1st Viscount Milner.
The new owner, the Mantis Group, currently operates the five-star Draycott hotel, situated between Chelsea and Knightsbridge, and a number of boutique hotels and game reserves in Europe and South Africa.
"We are thrilled to have acquired the distinguished Lord Milner and we welcome it into the Mantis Group's collection of unique properties," said Adrian Gardiner, chairman of the Mantis Group. "We look forward to welcoming both regular and new guests through the doors under the Mantis brand."
The hotel was sold by Christie & Co on behalf of Finisterre Holdings.
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