Reports that Tory MPs have been placed on a three-line whip later this week raised speculation that the government could make a final attempt to hold votes on a Brexit outcome before European elections on 23 May.
"No deal planning has never stopped", the spokesman said.
Influential Conservative MPs such as Jacob Rees-Mogg believe a large number of party supporters will vote for the newly formed Brexit party in the May 23 elections to the European Parliament, when both main parties are expected to face another round of public anger after the recent local elections.
Mr Farage leaving LBC radio in London today. The opposition Labour Party was down five points on 16 per cent.
After twice delaying its exit from the European Union, Britain is reluctantly taking part in European Parliament elections on May 23, nearly three years after the referendum vote for Brexit. Ann Widdecombe, the former Tory minister who is standing in the south-west for the Brexit party, condemned the civil service and said the group would "sweep the traitors out of Westminster".
Labour Brexit spokesman Keir Starmer told Monday's Guardian newspaper his party would only support a deal if was put to a referendum vote.
If they are going to include permanent membership of the customs union, then frankly we would be better off staying in the EU.
A British government minister has admitted that the ruling Conservative Party faces an angry backlash from voters at this month's European elections, as an opinion poll showed that Nigel Farage's new Brexit Party got more support than the two traditional parties combined. They have literally denied our existence from day one, and when we get on to a major interview they don't want to talk about this campaign, they don't want to talk about our candidates, they don't want to challenge Brexit and the way in which we want to do it. The collapse in support is piling pressure on May to set a date to step down.
The source stressed that both sides in the cross-party talks agreed that no Parliament can bind a future government and pointed out that most European Union trade deals have a six to 12 month exit clause.
"A vote for Labour is a vote for Brexit in these elections".
Established political parties fear that Nigel Farage's Brexit Party will do very well at their expense - and also expect that confusion over centrist parties will split the vote of those who want to stay in the EU.