Nigel Farage is set to lead a march through London on the same day that Supreme Court judges will hear the government's appeal against a High Court ruling on triggering Brexit talks.
Four days have been allocated to the hearing and it will be streamed live on the internet. The case is set to begin on 5 December.
Up to 100,000 Eurosceptics could march alongside the UKIP leader from Trafalgar Square to Parliament Square, according to the Daily Telegraph. The newspaper also revealed that Leave.EU – which is organising the event – is aiming to raise £100,000 to represent Brexiteers in court proceedings.
A spokesman for the group claimed that Farage and millionaire UKIP donor, Arron Banks, had "secured support from thousands of Leave voters" for the protest and legal action. He said the action would serve as a "reminder about what we voted for, so there is no slippage on the single market... we think this case was used to get a negotiating stand on the single market".
The unidentified spokesman added: "We will also be launching with all Leave campaigns including members of all political parties a march on the Supreme Court to make a point that 'Brexit means Brexit'.
"This will remind the government/politicians and the establishment, including the court, that they cannot ignore the democratic vote of the people in the referendum."
Speaking on the Andrew Marr show earlier on Sunday (6 November), Farage claimed that any effort to overturn the outcome of the EU referendum on 23 June would spark disturbances on the streets.
"Believe you me, if the people in this country think they're going to be cheated, they're going to be betrayed, then we will see political anger the likes of which none of us in our lifetimes have ever witnessed in this country," said Farage. "Those newspaper headlines are reflecting that."
He added: "Now, I'm going to say to everybody watching this who was on the Brexit side – let's try and get even, let's have peaceful protests and let's make sure in any form of election we don't support people who want to overturn this process."