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The party chairman said a series of incidents had led to the decision, and the returning officer for the Stoke-on-Trent Central by-election that Mr Nuttall is standing in has been informed. Ukip's Paul Oakden said: "Since the address of the house Paul Nuttall has been staying at during the Stoke-on-Trent Central campaign was published on social media there have been a series of concerning incidents at or around it. "The most serious of these was two unknown men attempting to gain access to the house through a rear entrance.

GETTY Ukip leader Paul Nuttall has been forced to flee his home over security fears

"There has also been hate mail posted through the letter box and other intrusive behaviour including trespassing in the private garden of the premises and attempts to take pictures through windows and the letterbox." Everyone living in the property in Stoke has been forced to leave, not just Mr Nuttall. A Ukip spokesman told the Express.co.uk that they suspected “politically active” people from outside of Stoke for the disturbances with “groups of youths” congregating outside the house and people trespassing in the garden of the property as well as trying the handle of the front door at the private address.

PA Ukip's Paul Nuttall (L) with Nigel Farage in Stoke

UKIP MEP Paul Nuttall visits the Roma ghetto in Sofia Wed, February 1, 2017 Fakulteta district of Sofia, Bulgaria where 55,000 Bulgarian romas live in exteme poverty Play slideshow 1 of 11 Roma children lie in squalor as they cry for food

The spokesman added: “The democratic action and movement of a party cannot operate due to these threats.’ He also confirmed that the police had been informed of events. Mr Nuttall has already been the target of hostile actions in the ongoing campaign for the Stoke Central seat when he and the party’s former leader Nigel Farage were seemingly egged as they canvased around the city.

PA Nigel Farage and Paul Nuttall campaign in Stoke

At the time MEP Bill Etheridge told Express.co.uk: "This is typical of the left; they have no arguments left so they resort to violence. "They will learn that they cannot intimidate the legitimate voice of the British people . The more they attack us the more resolute we will be. The people of Stoke want us to be here and we will be ramping up the campaign as voting day draws closer.” A recent survey by Leave.EU found that the Ukip leader would be victorious with 39 percent of the Staffordshire vote with Labour’s Gareth Snell second on 33 percent.

PA Paul Nuttall has been forced to leave his home in Stoke