Nigel Farage has vowed to “resist” asylum seekers being housed in areas under Reform’s control.
He also promised to end working from home for public servants at Reform councils in a Trump-style crackdown, first revealed by the Sun on Sunday.
Speaking in County Durham, where Reform replaced Labour as the largest party, Farage said asylum seekers were being “dumped” into the north and getting “everything for free”.
He said: “It is unfair, it is irresponsible, it is wrong in every way and I don’t believe Starmer has got the guts to deal with it.”
It will set his party on a collision course with the Home Office which manages the asylum system.
Reform took control of Durham, Kent, Lincolnshire, Lancashire, Staffordshire, Nottinghamshire and Derbyshire county councils.
Alongside Doncaster, North Northamptonshire and West Northamptonshire.
Brexit big beast Nigel claimed the results revealed “the end of two-party politics” and the “beginning of the end” of Kemi Badenoch’s Tory Party.
He said Reform will end working from home at councils and sack staff working on climate change or diversity – similar to one of Donald Trump’s key policies.
Mr Farage hopes to copy Elon Musk’s Department of Government Efficiency (Doge) which is slashing federal spending.
He told the BBC that “every county needs a Doge” and there will be “increased productivity from staff”.
Reform also won the mayoralty of Greater Lincolnshire and took the Labour parliamentary seat of Runcorn and Helsby by just six votes.
The party had another big win in the East Yorkshire mayoral race with Luke Campbell earning 48,910 votes.
The Liberal Democrats came in second in the race, receiving 35,510 and leaving the Tories in third and Labour in fourth place.
However, Prime Minister Keir Starmer has vowed to fight on despite the results and the threat of a party revolt.
He said: “I could stand here and say Runcorn was close, we successfully defended three mayoralties, and the opposition parties tend to do well in these sorts of elections.
“But I’m not going to do that. What I am going to do is to respond by saying: I get it.”
The Prime Minister added that his government has delivered over two million extra NHS appointments, which meant that Labour met their target far earlier than expected.
Sir Keir also slammed both Reform UK and the Tories amid rumours that the two parties, according to Kemi Badenoch, may form coalitions at a “local level”.
Sir Keir said: “If you’re a Tory voter who doesn’t want a pro-Russia foreign policy, how does a merger with Reform work for you?
If you’re a Reform voter that thinks the Tories have failed for 14 years, how does a merger or coalition with the Tories work for you?”
He added: “Both sets of voters are being conned, because behind the scenes and behind the leader of the opposition, other people are looking for a coalition of these two parties.
“It would be a disaster for Britain.”
