Williams & Barnet

In the novel Elephants Can Remember, Williams & Barnet is a chemist's shop in Chipping Bartram which also has a counter selling cosmetics. Marlene Buckle works there and says she is "more or less" in charge of the cosmetics counter. Ariadne Oliver goes to Williams & Barnet, ostensibly to buy some lipstick, but in actuality in order to stage-manage a chance encounter with Marlene in order to obtain the address of Marlene's mother.