William Herbrand Sackville, 11th Earl De La Warr DL (/ˈdɛləwɛər/ ^ⓘ DEL-ə-wair; born 10 April 1949) is a British businessman and peer. He was styled Lord Buckhurst from 1976 until 9 February 1988, when he inherited the earldom.

The son of William Sackville, later 10th Earl De La Warr, the young William Sackville was educated at Eton College.^[1]

In 1976, Lord Buckhurst, as he then was, began a financial career in the City of London as an investment banker at Mullens & Co.^[2] For 24 years, he was a director of Laing & Cruickshank and later of its owner Credit Lyonnais Securities, for which he worked in equity sales and published a tip sheet called The Earl's Earner.^[3][2][4] He was later a director of Shore Capital, working with its natural resources team in sales,^[4] and also became a director of Cluff Natural Resources.^[2][3] In April 2016, he joined the hedge fund Toscafund Asset Management as a partner.^[5]

Beyond his work in the City of London, De La Warr is a dairy farmer and as of 2016^[update] was still breeding livestock at his family seat, Buckhurst Park, East Sussex.^[1][6]

In 2009, De La Warr began to hire out the library and an adjacent drawing room of Buckhurst Park for weddings, as a way of "adapting to stay afloat", in response to Britain's then-current economic crisis.^{[7][dead link]} The house and the estate were subsequently made available to the public for corporate events and outdoor pursuits, as well as weddings.^[6]

In 1978, De La Warr married Anne Pamela, Countess of Hopetoun. Born Anne Pamela Leveson, she is a granddaughter of Admiral Sir Arthur Cavenagh Leveson and has two sons by her previous marriage to the Marquess of Linlithgow.^[1] In 1988 she became Countess De La Warr and is the owner of South Park Stud, which breeds pedigree Shetland ponies on the Buckhurst Park estate.^[8]

Issue:

• William Herbrand Thomas Sackville, Lord Buckhurst (born 13 June 1979), is a hedge fund manager in the City of London, and heir to the earldom.^[1][9] In 2010, he married Countess Xenia Tolstoy-Miloslavsky.^[9][10]
  • William Lionel Robert Sackville, was born on 24 January 2014.^[11]
  • Victoria Elizabeth Anne was born on 6 June 2016.^[12]
• Edward Geoffrey Richard Sackville (born 6 December 1980), is a bloodstock agent who co-owns international bloodstock agency SackvilleDonald.^[13] In 2013 he married Sophia Georgina Milton Akroyd.^[14]
  • Viola Idina Edith Sackville was born in July 2013.^[15]
  • Arthur Edward Mark Sackville was born in June 2015.

De La Warr is a member of White's, the Turf Club, and Pratt's, traditional gentlemen's clubs in London.^[3]

De La Warr said in 2015, "I've spent most of my life hunting down the perfect sausage",^[16] and an authorized profile in Debrett's People of Today listed his recreations as "country pursuits, sausages".^[3] For a decade, he undertook to "resurrect an extinct sausage" that was a favourite of his childhood.^[4] The result became the Buckhurst Park sausage, a product made by Speldhurst Quality Foods, in which De La Warr owned a stake, sold nationally in Waitrose supermarkets.^[16][17]

In October 2021, De La Warr bought the original Poohsticks Bridge for some £131,000, intending to give it "pride of place" in Buckhurst Park^[18] but later had to sell it given the high restoration costs.^[19]

• Buckhurst Park, Sussex, family seat of the Earls De La Warr