The final United Kingdom election polls have predicted a disaster for the Conservative Party as projections point to a Labour “supermajority” in the federal election.

Polling data has suggested Labour leader Keir Starmer could secure an even greater number of seats than Tony Blair’s historic win 27 years ago.

According to UK YouGov’s MRP poll, Labour is tipped to win 431 seats, which would be the greatest single-party majority in the country since 1832.

The supermajority would be an increase of 229 seats since 2019 compared to a loss of 263 seats for the Tories, down to a total of 102.

The dire predictions have reportedly left Prime Minister Rushi Sunak in fear for his own seat of Richmond and Northallerton where his AU$3.8 million mansion is located.

Since calling the surprise election in May, Mr Sunak has been playing catch up with crises including a chaotic campaign start, D-Day blunder, and the betting scandal.

If the worst-case scenario materialises for Mr Sunak, he would become the first British PM to fail in securing re-election despite having won with 63 per cent of the vote in 2019.

The multi-millionaire Conservative Party leader has to face off against Labour’s Tom Wilson, Lib Dem Daniel George and satirical candidate Count Binface of the Count Binface Party.

Other high-profile Conservatives under threat include Chancellor Jeremy Hunt, former leader Iain Duncan Smith, former prime minister Liz Truss and ultra-conservative Jacob Rees-Mogg.

However, in his final campaign speech on Wednesday (local time) Mr Sunak told supporters: “It is not over until the final whistle blows and this underdog will fight to the final whistle, with your support.”

The Prime Minister warned of the dangers of a Labour government as he acknowledged frustrations with his own party.

UK voters have harboured growing discontent with a poor economy, rising crime, high immigration and environmental concerns.

After 14 years of Conservative rule, the consequences of Brexit, the Boris Johnson COVID-19 debacles and a revolving door of prime ministers have all taken their toll on Britons.

Mr Starmer has addressed the challenges before him and said his party was ready to govern.

“This is an incredible opportunity for change across the whole of the United Kingdom,” he said on Wednesday.

“I am waiting until 10 o’clock (pm) tomorrow but we have prepared this party for government. We have prepared all of our departments for government.

“If we are privileged to come in to serve our country, it will be public service for me as it always has been, not self-entitlement.”

The Labour landslide has signalled a major shift in British politics as the centre-left party campaigned on increased housing, nationalised energy, higher minimum wages and boosted healthcare.

The election polls are scheduled to close Thursday 10pm in London (7am AEST) and early declarations are expected around midnight local time (9am Friday in Australia).