The story
The name comes from Sir William Crookes, a chemist. Crookes Collosols, started by Henry Crookes, the son of William Crookes, was formed on 29 March 1912. British Colloids Ltd, formed in December 1918, bought this company in January 1919.
In 1946, it became The Crookes Laboratories Ltd, on Gorst Road in north-west London. It became a public company on 28 February 1951. Crookes Laboratories was an international company. One of its best-selling products was the LactoCalamine skin-care range. This latter featured the Hollywood film star Audrey Hepburn in its adverts.
By the 1960s it was making dosulepin, a tricyclic antidepressant (TCA), under the brand name Prothiaden.
From Wikipedia’s article on Crookes Healthcare, shared under CC BY-SA 4.0.3