What was the name of Fleming's Suffolk country home?

Alexander Fleming’s Suffolk country home was called The Dhoon.

Fleming and his family owned the house in Barton Mills, a village in Suffolk, from 1921 until his death in 1955. The property gave him a rural retreat from his demanding work at St Mary’s Hospital in London, where he studied bacteria and later discovered penicillin’s antibacterial effects.

The Dhoon is closely linked with the 1928 discovery story. Fleming spent part of that summer there with his family, leaving several culture plates in his London laboratory. When he returned, one plate had been contaminated by mould, and the bacteria around it had been destroyed. That chance observation launched his investigation of penicillin.

The Dhoon was not the laboratory where Fleming discovered penicillin, a misconception sometimes encouraged by the timing of his holiday. The house stood in Barton Mills, and a plaque there commemorates its association with the scientist.