There are perhaps two explanations for this. The first is that British people have always tended to adopt something of an “all or nothing” approach to alcohol, rather than the “little and often” than is more common in many Continental countries. This has if anything become more marked in recent years. And we also seem to be much more willing to admit, or claim, that we have been drunk than many other countries, and even see it as a desirable objective for a night out. That some of the other leaders are Australia, Canada and the United States, all of which are actually below the UK in the consumption league table, suggests there is a strong cultural element to it.
It also raises the question of how you actually define “drunk”. To my mind it implies one or more of slurring words, unsteady on feet, losing inhibitions, vomiting, becoming loud and aggressive or tearful and maudlin. It’s well beyond just a bit merry or tipsy, and definitely doesn’t just mean “over the legal limit for driving” as sometimes seems to be insinuated. Are people really saying they’re getting in that state once a week and, if they are, shouldn’t they take a long hard look at themselves? Or do they actually see it as just getting through half a bottle of wine or three cans of Punk IPA in an evening?
I’ve certainly had my moments in the past, but I can’t recall a single occasion during the past year when I’ve been in anything like that condition. For example, earlier this month we had a day out in Rugby, during which nine or ten pubs were visited. (I know exactly how many, but not everyone did every pub) Pints weren’t consumed in every pub, but they certainly were in quite a few. But everyone managed to get back to their hotel or catch their train home without any problem, and the conversation, while it might have become a little more forthright, never descended into argument. I wouldn’t say anyone was drunk or anywhere near it.
At the end of the day, this survey doesn’t really convey any worthwhile information: it just serves to reinforce national stereotypes and highlight our collective feeling of guilt and self-loathing about drinking.