Labour and the Conservative Party have the least clear policies on Brexit, according to a YouGov poll.
The former Conservative Party leader said he was "really sad" to see the "formidable force" join the Brexit Party.
A YouGov poll suggests Nigel Farage's Brexit Party is taking the lead ahead of next month's elections to the European Parliament.
European Council president Donald Tusk said he still believed that Brexit could be reversed after the UK's departure from the EU was delayed until October 31.
TripAdvisor have suspended reviews for the Norfolk Bed and Breakfast owned by Brexit Party founder Catherine Blaiklock due to an influx of fake reviews.
The leader of the new Brexit Party said he would continue to "fight damn hard" in his quest for the UK to become a sovereign nation.