Crack cocaine, heroin and cannabis were seized by police during a raid in Sheffield.
Officers searched a house on Morgan Avenue, Shiregreen, where they also recovered a large amount of cash.
Police said they had carried out ‘a number of pre-warrant enquiries’ before the raid.
Two men and a woman have been arrested.
n Anyone with information about drug activity should call South Yorkshire Police on 101.
Alternatively call Crimestoppers anonymously on 0800 555 111.