Raggy, in every company I worked for from 1980 until I retired in 2012, alcohol was forbidden on the premises. Bringing alcohol on to company premises would render the offender subject to disciplinary proceedings for gross misconduct, putting it into the same group of offences as assault, fighting, sexual harassment, theft, etc., the penalty for which was dismissal without notice.

That rule applied to every employee and director, from the MD/CEO downwards.