1966 CE
LSD is outlawed in the U.K.

LSD was rediscovered and popularised during the 1960s hippy counter-culture, with people experimenting with the drug for pleasure. Among hippy and fringe groups, LSD use was often seen as a spiritual or even religious experience and as a way for people to get in touch with other people as well as with their own self.

After LSD was so popularized (and perhaps partly because of it), the drug was banned in the UK as a 1966 addition to the Drugs (Prevention of Misuse) Act 1964, while its medical use was outlawed in 1973.

Source: Webster, R. (Ed.). (2001). Neurotransmitters, drugs and brain function. John Wiley & Sons.

Drugs: LSD (lysergic acid diethylamide)
Regions: UK (England, Scotland, Wales, Northern Ireland)
Topics: Prohibition