Built in c.1722, this was home to several people connected with the Houses of Parliament nearby. It was also popular lodgings for curates, one of whom was the father of Field Marshal 'Monty' Montgomery.
Viscount Milner bought the house in 1914, describing it as 'just about as big as a band box and rather in the same style'. As one of Lloyd George's closest advisers, Milner held several meetings here during the First World War, a pattern followed by the later political residents. These included several MPs, Victor Montagu (formerly Lord Sandwich) and Alastair McAlpine. The house was used for John Major's campaign headquarters during the succession struggle immediately after Margaret Thatcher's fall in November 1990. It was also used by her as a base for the first few months after her resignation, as well as becoming the nerve centre of Tory anti-Maastricht operations in 1993.