Brook was asked in 1958 by the Eugenics Society to run the birth control clinic they had just been bequeathed by Marie Stopes.
The work of the Centres was facilitated by the National Health Service (Family Planning) Act 1967.
Until her death in 1997, despite severe eye problems in later life she retained an keen interest in, and supported, the activities of the centres that bear her name.
[2] By 1969 the Centres were offering contraceptive advice to more than ten thousand unmarried people under 25, the majority were aged between 19 and 21 with around one in six being under 19.
Brook established solid relationships with central and local government authorities; the Guest of Honour at its 25th anniversary in 1989 was the Princess Royal.