Not so long ago, my GP was a tad shocked that most nights I had 3/4 glasses of wine and a few bottles of beer. I mean she was so shocked she sent me for various tests.
The current limit is 14 units which is broadly seven pints or glasses of wine a week. When I mentioned most of the country must exceed that she agreed, and said it was an aribtrary figure and not so long ago it was 60 units. She conceded she drank more than that. These limits are they BS or stepped in evidence led science. Most people who drink, must have more than seven pints a week, surely.
There was a woman who drank 100 units a week, whilst it is a decent amount it isn't that much surely. I recko these limits are just arbitary.