[1] He grew up on the family estates centred around Lambton Castle near Washington in County Durham, actually living at the nearby Biddick Hall.

[2] She was the daughter of Major Douglas Holden Blew-Jones and his wife Violet Hilda Margaret Birkin,[3] sister of Freda Dudley Ward.

[4] They had five daughters and one son:[5] Lambton first stood for Parliament at the 1945 general election in the safe Labour seat of Chester-le-Street, then Bishop Auckland in 1950.

On 22 May, Lambton resigned from both his office and Parliament; this caused a by-election for his seat which was won by Alan Beith for the Liberal Party.

[7] A security inquiry on the prostitution scandal concluded that there had been "nothing in (Lambton's) conduct to suggest that the risk of indiscretions on these occasions was other than negligible".

Later, Lambton stated that his sense of "the futility of the job" and lack of demanding tasks as a junior minister were reasons he went to prostitutes.

In 1991, Lambton made an extended appearance on the TV discussion programme After Dark, chaired by Helena Kennedy, alongside Duncan Campbell, Jane Moore, Clare Short, Anthony Howard and others.