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The online bookmaker has analysed the odds in a number of marginal seats across the UK and predicts widespread losses for Labour in Wales and London. The betting also suggests the Tories will erode the SNP’s advantage north of the border, with Nicola Sturgeon’s party at 6/4 to gain less than 45 seats. Betway’s Alan Alger said: “Theresa May’s party is now a near-certain 1/50 to remain in power. On the flipside, Labour are a massive 16/1 to gain the most seats and 28/1 to win a majority. "Putting that into perspective, we’re offering shorter odds on England winning the next World Cup (20/1) or Nigel Farage appearing on Strictly Come Dancing (10/1).”

GETTY Theresa May could win 398 seats at next month's election, beating Margaret Thatcher's 1983 record

Labour are predicted to win only 157 seats – the party’s worst result since the 1930s. Bookies say a Labour victory is less likely than the England football team winning the next World Cup. Bookmaker Sporting Index carried out a seat-by seat analysis for the Sunday Express which puts the Tories on course to win 241 more seats than Labour.

The UK’s most marginal seat, Gower, won by the Conservatives in 2015 with a majority of just 27, is a whacking 1/10 in the Tories’ favour. Similarly, Derby North, taken away from Labour by Tory Amanda Solloway two years ago is 1/5 to remain blue. Another marginal seat, Croydon Central, where the Tories’ Gavin Barwell has a slim 165 majority, is tipped to remain Conservative. Chester, where Labour scrapped a win by 93 votes, is set to go back to the Conservatives and the odds suggest the same for Ealing Central, where Labour’s Rupa Huq is hanging on with a 274 majority.

Betway is also tipping Plaid Cymru to give Labour a drubbing in Wales. The Welsh national party heads the betting for Ynys Mon, a seat won by Labour’s Albert Owen with just 229 votes. Mr Alger added: “The shaky start to the Liberal Democrat campaign has seen a fl ood of punters looking to back them to win fewer than nine seats, while those north of the border perhaps see Ruth Davidson’s Scottish Tories as a real threat to the SNP monopoly. “Nicola Sturgeon’s party is being heavily backed to win fewer than 45 seats.With little value available in the more straightforward markets, novelty betting has surged this year. Several have backed Theresa May to emulate John Major and address crowds from a soapbox, while one punter has even taken 16/1 that the Labour Party will again allow its policies to be etched into a giant stone tablet.”

GETTY Labour leader Jeremy Corbyn is predicted to win just 157 seats, the worst result since the 1930s

Analysis of betting patterns by Casinopedia found that 64 per cent of punters are backing Mr Corbyn to become Prime Minister because of the poor odds on a win for Mrs May. The online casino guide’s Jake Fox said: “The opinion polls and perhaps common sense suggest they are barking mad but for many people a small bet on an outrageous outcome creates a bit of a thrill and adds to the drama. It’s like betting on a 200-1 shot at the Grand National. “It’s unlikely to win but just imagine if it did.”

Snap election 2017: The pictures politicians may not want you to see Sat, May 27, 2017 Protests, fights and daleks, it all happened when the politicians hit the campaign trail for the snap election Play slideshow Getty Images 1 of 48 A UK Independence Party supporter (L) scuffles with a pro-europe supporter ahead of a visit by UKIP leader Paul Nuttall to Hartlepool

Labour leader Jeremy Corbyn will be left with 52 fewer seats than Michael Foot won during Mrs Thatcher’s historic postFalklands landslide, when the Conservatives won a record 397 seats and had an overall majority of 144. Spread betting this year is up by 50 per cent and bookies expect to break the record for bets taken on a non-sporting event. Sporting Index’s Ed Fulton said: “There is nothing to suggest that the final election result will be anything other than a landslide victory for the Conservatives. “At one point, Theresa May was gathering so much momentum that it looked like the Tories would smash the record held by Margaret Thatcher and secure 405 seats. In the last week that has subdued slightly and the party currently sits at 398 seats, but we could see that figure soar again depending on how the live debates go in the coming weeks.

GETTY Tim Fallon's Liberal Democrats have dropped in the betting stakes from 23 to 18 seats

GETTY Theresa May's Conservative party is a near-certain to remain in power, according to Betway

There is nothing to suggest that the final election result will be anything other than a landslide victory for the Conservatives. Ed Fulton, Bookmaker Sporting Index