Hackwood Park is a 260-acre (110 ha) country estate that primarily consists of an 18th-century ornamental woodland and formal lawn garden and a 51,681 sq ft (4,801.3 m2), long mansion, in light stone, of symmetrical design. It remains a large part of Winslade, a small parish immediately southeast of Basingstoke in Hampshire, which had a population of 174 people throughout the 1801 to 1851 period when the manorial interest still held legal value. The parks and gardens are Grade I listed on the Register of Historic Parks and Gardens and the main house is Grade II* listed on the National Heritage List for England. It was placed on the market in 2016 seeking offers of around £65 million. As of 2025, it remains for sale but now nominally as two expert restoration companies seeking a grant of planning permission for use as a hotel, instructed via the owners. These restored The Connaught (hotel), and Claridge's, in Mayfair, London