Brexit supporters have reiterated their "Leave Means Leave" message at a counter-rally to the "People's Vote" march in central London.
Supporters of leaving the EU were addressed by Nigel Farage, and MPs Kate Hoey and Nigel Owen Paterson in a rally that pledged to "rescue Brexit" and express "support for the Brexit Britain voted for".
The event, run by Leave Means Leave and thought to be attended by around 1,200 people in Harrogate, has branded the campaign for a second referendum a "losers' vote".
It was infiltrated by a number of Remain supporters, however, who were booed out of the auditorium.
Mr Farage told Sky News he believed that, in a second referendum, "the damage to trust and faith in our entire democratic system would be enormous".
"I'm quite happy to have another referendum in 20 years or so, when we work out exactly what shape's Europe's going to be and how happy we are as an independent nation," he said.
The MEP was joined by Labour MP Kate Hoey, who has been heavily criticised in her part for her vocal support of Brexit.
"We shouldn't really be here," she said. "We had a clear vote to leave, we know that people knew what they were voting for, even though we are being told people were stupid and racist."
Negotiations over a final divorce deal are currently at an impasse over the issue of the border between Northern Ireland and the Republic of Ireland, which remains in the EU.
Mr Farage, who is the vice chairman of Leave Means Leave, blamed Theresa May for the failure to swiftly exit the bloc.
He told Sky News: "She wants Britain to leave in name only and opt back in, but that is not what the British people voted for."
The People's Vote march, which took place in central London on Saturday in support of a second referendum on membership of the EU, was attended by 700,000 people.