I would hold it in South Yorkshire, somewhere like Doncaster. These are English working class communities that the London elite no doubt think deserve to die and be replaced with Pakistanis.
This is the heartland of Labour, but voted strongly for Brexit. It is in some ways the equivalent of Michigan, Ohio, Wisconsin working class communities that were Democrat and union strongholds, but Trump flipped them because Globalism was literally killing their communities.
...and have Nigel Farage help write his speech to hit all the right notes to appeal to them.