The march, organised by the anti-European Union campaign Leave.EU, will end with a rally in Parliament Square within sight of the court building where judges will be hearing the appeal.

The campaign group is planning to "crowd fund" £100,000 from its supporters to pay for barristers to represent Leave supporters in the court action.

This will mean that the anti-EU supporters will have their own barristers in the legal action, who can challenge claims made by Remain supporters and even the Government.

Mr Farage, the interim leader of the UK Independence Party, and other prominent Leave supporters are due to lead the march from Trafalgar Square along Whitehall to Parliament Square.