Undercover filming by Channel 4 has revealed shocking levels of racism and bigotry from two officials fighting for key Hartlepool seat.

Party activists in the campaign to elect Brexit Party chairman Richard Tice to Parliament were caught on camera by Channel 4 using a series of offensive slurs against Muslims, black people, Pakistanis and Turks.

David Mincher was elected as a UKIP councillor in May but later switched to the Brexit Party.

He can be heard saying, “We tried to put a big pig’s head in the concrete. We got over the fence. You know, when people were doing the groundwork. They had all the bouncers who do all the North East, were doing the security for that mosque. So when we got in they caught us. Just f***ing kicked us out.

“Because we were going to take a video with a pig’s head under their concrete. Let them finish it. Let it all get built. And then just send the video and say, ‘Look there, there you go, you’ve got a f***ing pig’s head under your mosque there so you’ll have to get it all knocked down and redone again’. Or they just leave it, cos it’s desecrated ground innit?”

Mr Mincher repeats the story about the pig’s head repeatedly, including once in the company of Rick Moore, who is standing to become a Member of Parliament for the Brexit Party in Blackburn.

When Mr Mincher said: “We were going to video putting the pigs’ heads in the concrete”, Mr Moore replied, “Yeah”. Before Mr Mincher added: “But they just ended up some of the young’uns come round putting them on the spikes around the railings.”

Mr Moore did not object during the exchange but in a statement told Channel 4 News he was “mentally tired” after working and campaigning over long hours, had “switched off” from what Mr Mincher was saying, did not recall the conversation and was “feigning attention”.

He said: “I do not endorse his behaviour, and I can only apologise for not paying attention to what was being said to me at the time so that I could have taken action. I hope that Mr Mincher is dismissed from the party.”

Mr Mincher also says, “They’re outbreeding us… As soon as they get into one or two houses, the prices go down for the rest of the street. So they then go like right, ‘Like we’ll buy that house next door now they’ve moved out’. It’s all a knock-on effect isn’t it? Next door move out first because they don’t want them next door, because they live like animals.”

Mr Mincher was elected as a UKIP councillor in May but later switched to the Brexit Party. He is part of a pro-Brexit coalition between the Brexit Party and Conservatives that is now Hartlepool Borough Council’s largest political group.

The councillor made a series of offensive slurs against a number of other ethnic groups. Referring to the Turkish population, he said: “The Turks are the biggest f***ing heroin dealers in the country… F***ing all they’re doing is f***ing cleaning the money off the heroin and all that, aren’t they, the f***ing Turks.”

Mr Mincher also used derogatory terms against black people, saying: “Cos you’re getting more of the f***ing blacks and all, you know, the proper blacks from Somalia and all that. Cos you can tell the Somalians, they’re like skinny blacks aren’t they?”

He can also be heard saying, “Nearly all of Middlesbrough is P***s. Boro’s f***ing rife with all the f***ing Asians now like.”

The Brexit Party’s chairman and Hartlepool candidate, Mr Tice, was not present when Mr Mincher was filmed making his derogatory comments.

The Brexit Party today said it had removed the whip from Mr Mincher and dismissed Mr Parkin.

Richard Tice, chairman of the Brexit Party, said: “Channel 4 alerted us late on Friday of some appalling comments made to one of its many undercover reporter teams who have been following the Brexit Party. We took immediate action within hours by removing the whip from an independently elected local councillor, who had come over to the Brexit Party in September; we also dismissed a semi retired part time employee of a regional office. Furthermore the allegations made by the local councillor in question against the Brexit Party are totally denied.

“Both I and the Brexit Party totally condemn the hideous remarks in question in the strongest possible terms. I would take the gravest exception to any attempt by Channel 4 to suggest that I or the Brexit Party in any way share, condone or was aware of these views and matters.

“Separately, we have CCTV evidence and written statements proving some of Channel 4’s undercover reporters were impersonating as Brexit Party canvassers, wearing our rosettes and engaging in canvassing activity. Following discussion with our lawyers, it is believed that Channel 4 and its reporters may have breached electoral laws under the Representation of the People Act 1983 and Electoral Commission rules, as well as breaching Ofcom’s rules. It appears that they still have other undercover reporters following us.

“Grave and appalling as the reported comments are – which we have immediately dealt with – it comes as no surprise that Channel 4 continues its attempts to smear leading Brexiteers like myself, including last week against the Prime Minister himself. Channel 4 appears to have abandoned all pretence of impartiality, in clear breach of its obligations in General Election reporting. They are clearly willing to go to the most extreme lengths to try to discredit well known Brexiteers and indeed Brexit itself.”

Mr Parkin did not provide a response.