Professor Watson said the UK may need its own strategy for monitoring the future provision of these metals, as well as existing EU-wide strategies.

BBC: Minister describes Pfizer closure as 'bombshell'

Katri Abel-Ollo, an analyst for the Estonian Drug Monitoring Centre, says the Estonian government still has "no specific strategy" for dealing with the overdose issue.

BBC: Synthetic drug fentanyl causes overdose boom in Estonia

Two roles have grown increasingly important for non-executives: that of contributing to setting corporate strategy, and that of monitoring the executives.

ECONOMIST: The fading appeal of the boardroom