Thousands of people have marked the banning of alcohol on London transport with a party that ended with arrests, assaults and cancelled trains.
Drinkers, many in fancy dress, gathered on Tube trains and station concourses in a last celebration before the ban came into force at midnight.
But police said what should have been a fun event came to an "unfortunate" end.
Six Tube stations were closed, while police made 17 arrests. Six assaults were reported on Tube staff and police.
There were also numerous reports of damage to Tube trains, which led to suspended services.
I've been to London, but I have to admit the first thing I said when I read this story was, "You could drink on the Tube? Really?"
Luckily, British folk from everywhere were ready to send the old tradition out with a little class:
Peter Moore, 35, a sailor from Brighton, said he had downed a can of beer in 10 seconds. "It's sweaty on there, but I'm going round and round until I vomit," he said.
It's the sort of thing that would bring a tear to Peter O'Toole's eye.