Nobody could quite believe what was happening - the two clients seemed to be trying to outdo each other.
One ordered five bottles of champagne, so the next one upped it to six, then to seven, and so on.
It was incredible. The men didn't end up drinking that much of it themselves - it was mostly consumed by the lady friends they had met inside on the night.
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David Cameron said the Met proved it can "do more with less" and declined to criticise the Mayor of London for his water cannon spend.
A group of disabled activists threw toys and balls at him as he entered the conference.
A wet start to the week and the unsettled weather is set to continue over the next few days.