Sure it wasn't LSD in the 70s? And Operation Julie, rather than Juliette, immortalised by The Clash.
I think a different operation.
I remember the police going in about 4am one morning, inner and outer cordons, multiple full SWAT teams in our garden back and front, helicopter and enough blue lights to run a disco.
I'm guessing about 1984-85, and I'm fairly sure it was industrial levels of cannabis not LSD.
The story was the gang bought in boat loads from Morocco to a beach in deepest darkest Wales.The beach was about 5 miles down a land-rover track to the nearest road. So as transport the gang bought 3 serious off road 4X4's to transport the bales from beach to storage in Lewisham, S E London.
They also needed a boat to transfer the bales from the ship to the beach and so bought a boat they kept on the beach in a specially constructed hidden bunker.
So about once a month, in the early hours of the morning the three off road 4x4's, with big rally lights and covered in mud literally up to the roof would arrive next door to us in Lewisham and offload the cargo for onward distribution.
Our neighbour, as he only played a minor part I think was sentenced to about 2 or 3 years of which he must have done about half as he was back by the time I moved out in 1988