'Ministers are said to be considering sanctions including a blacklist that bars intoxicated British passengers from flying with domestic carriers. Passengers could also be screened for drunkenness before they board, or stopped from buying too many drinks in airport terminals.'
So the buck is passed to poorly paid, poorly motivated, hassled Customer Service Agents at the boarding gate untrained in dealing with drunks?
How likely are they to intervene without appropriate security personnel? Like much in UK we plan a new law/regulation without providing the means to enforce existing rules