Vote Leave has quietly dropped its appeal against a £61,000 fine for electoral spending offences - on what would have been Brexit Day.
The Electoral Commission announced the official Brexit campaign had today "withdrawn its appeal and related proceedings" against the watchdog.
It is believed that refers to both Vote Leave's appeal against the watchdog's findings last July, and a separate judicial review around the decision to publish those findings.
It was not clear tonight if a separate county court action around the return of spending documents had been dropped.
It comes eight months after the campaign was fined £61,000 for breaking electoral law in a long-awaited watchdog report.
The Commission slammed Vote Leave's decision to hand more than £600,000 to a then 23-year-old fashion student - which his group BeLeave spent on a data analytics and voter targeting firm.
The massive donation to Darren Grimes, just days before the 2016 referendum, meant Vote Leave did not breach its £7million spending limit.
But in its report last July, the Commission said there was "significant evidence of joint working" between Mr Grimes and Vote Leave. That meant Vote Leave should have declared the spending as its own, the watchdog said.
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Therefore Vote Leave actually spent £7.4million - breaking the limit, the Commission said.
An Electoral Commission spokesperson said today: "Vote Leave has today withdrawn its appeal and related proceedings against the Electoral Commission’s finding of multiple offences under electoral law, committed during the 2016 EU referendum campaign.
"Vote Leave was the designated lead campaigner for the leave outcome at the referendum.
"We found that it broke the electoral rules set out by Parliament to ensure fairness, confidence and legitimacy at an electoral event.
"Serious offences such as these undermine public confidence in our system and it is vital, therefore, that they are properly investigated and sanctioned.
"We have been advised that Vote Leave has paid its £61,000 fine and look forward to receiving the sum in full."
A statement released on behalf of Vote Leave said: “For almost three years, Vote Leave has successfully fought back against numerous allegations and conspiracy theories, spending almost £1 million in the process.
"Since July 2018, we have been preparing our Appeal against the Electoral Commission’s unwarranted and unsubstantiated finding and fines.
"Sadly, we now find ourselves in a position that we do not have the financial resources to carry forward this Appeal, even though we are confident that we would have prevailed on the facts in Court.
"We have therefore regretfully decided to discontinue our Appeal.”
