A spokeswoman for the RFU said "significant steps" were taken "to improve this event including reduced licensing hours, earlier kick-off and bar closures plus no games before the main match".
She added that "behaviour at this year's match was better than previous years".
"We will have a full debrief of this event with the police and the council as we do every year and will look at every complaint individually," she said.
The Met Police said [only] four people were arrested [out of 82,000] for offences which included assault and public order related matters.
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Time to move on aye?