In 1977, police bust a multi-million pound LSD ring, in "Operation Julie". The gang claimed to be idealists who wanted to expand people's consciousness. But the courts disagreed.

In 1977, police forces from across England and Wales closed down a multi-million pound LSD manufacturing ring, in "Operation Julie". The police thought they were greedy criminals - and the courts agreed, handing down stiff jail sentences.

Since the programme was broadcast the production team has found out that they were misinformed about one of the key protagonists Mr Richard Lee - known, at the time, as Detective Inspector Dick Lee of Thames Valley Police. They were led to believe that Mr Lee had passed away. This is not the case.

Radio 4 has issued an on-air apology. The programme has also been removed from the iPlayer. We would like to apologise for the error and any embarrassment or distress caused by our programme to Richard Lee, his family and friends.