The London mayoral election started with an “absolute shambles” in one borough as voters were turned away from polling stations given incomplete electoral lists.

Hundreds of residents in Barnet said they were told they could not vote without their polling card, while some carrying the document said they were also refused.

Arjun Mittra, a Labour councillor for East Finchley ward, said the “logistical nightmare” affected every one of the borough’s 155 polling stations.

“Out of the seven people who came to my polling station in the first 10 minutes, only one was able to vote,” he told The Independent.

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“They were very angry – I had one lady who was crying because she was so upset.

“She had come at 7am to vote because she was going away for the day, she said she was disenfranchised. It's a disgrace.”

For the first half an hour after voting started the majority of voters were turned away, Mr Mittra said, but the rules were later relaxed to allow people carrying polling cards, passports or driving licences as council staff scrambled to print the correct registers.

An estimated 250,000 people were going to the polls in Barnet to vote for the London Mayor, London Assembly members and council by-election in one ward.

Mayor of London 2016 - the candidates at a glance Show all 7 1 /7 Mayor of London 2016 - the candidates at a glance Mayor of London 2016 - the candidates at a glance Sadiq Khan - Labour The MP for Tooting, Sadiq Khan says the mayoral election will be a 'referendum on the Tory housing crisis'. He has also pledged to freeze fares until 2020. Son of a bus driver, and doesn't let anyone forget it. His Conservative opponent has made claims about people who he has previously associated with - but attacks so far have failed to stick Mayor of London 2016 - the candidates at a glance Zac Goldsmith - Conservative The MP for Richmond, Zac Goldsmith is a longstanding campaigner against the expansion of Heathrow airport. Despite his environment credentials - he once edited The Ecologist magazine - the Tory candidate has said he would 'rip out' Boris Johnson's cycle lanes if they don't work. A very wealthy man, his campaign has been dogged by accusations of racism against Sadiq Khan Mayor of London 2016 - the candidates at a glance Sian Berry - Green Party A councillor in the London Borough of Camden, Sian Berry is campaigning on improving homes for renters, cleaning up London's air pollution, and flattening fare zones to help Londoners. She previously ran as the party's mayoral candidate in 2008. In 2012, the Green Party came in third place Mayor of London 2016 - the candidates at a glance Caroline Pidgeon - Liberal Democrat A Liberal Democrat London Assembly member for eight years, Caroline Pidgeon has a strong record on the Assembly's transport committee standing up for commuters and cyclists alike. She wants to set up a £2 billion housing investment fund and make all the capital's buses zero emission Mayor of London 2016 - the candidates at a glance Peter Whittle - UKIP UKIP hasn't fared so well in London in previous elections, but is hoping for a breakthrough this time. Peter Whittle has been UKIP's culture spokesperson for two years. He tends to focus on the impact of immigration on London's housing crisis Mayor of London 2016 - the candidates at a glance George Galloway - RESPECT George Galloway has made a habit of defying the odds and pulling off stunning victories when standing for Parliament. His campaign - based on the slogan 'a London for all' has so far failed to make headway in the polls - has his luck run out? Mayor of London 2016 - the candidates at a glance Sophie Walker - Women's Equality Party A journalist, Sophie Walker is campaigning for the little-known Women's Equality Party. She is pledging to make 'equality and diversity the fuel that drives our nation's capital' with measures to increase women's representation in enterprise, more affordable homes and flexible childcare

Residents were voicing their anger about the “absolute shambles” on Twitter, with many saying they had registered but were unable to vote.

Some said they were directed to different stations, where voters reported long queues and confusion among staff.

“If you live in Barnet you now have an excuse to be even later for work because of broken democracy,” one critic wrote.

Christine Ozolins, said she and other residents refused to leave their polling station until they were allowed to vote after being initially turned away because they were not listed.

Chief Rabbi Ephraim Mirvis, head of the United Hebrew Congregations of the Commonwealth, was unable to vote after he and his wife were found not to be on the list.

His office said the "disappointed" couple had attended the polling station on their way to the airport, before flying to Amsterdam to spend the weekend with Holland's Jewish community.

Conservative mayoral candidate Zac Goldsmith visits Sidcup High Steet during his campaign tour on March 3, 2016 in Sidcup, England. (Ben Pruchnie / Staff)

The fiasco could have an impact on Conservative hopes in the election, with Barnet electing a Tory London Assembly member at the 2012 election and expected to turn out largely in support of Zac Goldsmith.

Mike Freer, the Conservative MP for Finchley and Golders Green, advised people to take their polling cards to vote.

“They appear to have a problem identifying voters,” he wrote on Twitter.

The documents, which contain directions to polling stations and other information, are not officially required to vote.

ID is also unnecessary under normal circumstances as staff are meant to cross-check voters’ names and addresses on their electoral lists.

An example of a London polling card, which states that the document is not needed to vote

A spokesperson for Barnet Council told The Independent the issues had been resolved by 10.40am.

“All the updated electoral registers are now in place and people can vote as normal," he said.

"We are advising people who were unable to vote this morning to return again before the polling stations close if at all possible. We apologise for the problems we have experienced."

Anyone unable to return to polling stations was able to apply for an emergency proxy vote by completing an online application by 5pm today.

Some residents blamed the outsourcing firm Capita for the issues, but a spokesperson for the company said it was not responsible for voter lists, although it sends out postal and proxy vote forms and runs a telephone helpline.

Barnet Council said it was responsible for the "electoral process" including voter registration, electoral registration lists and polling stations.

A spokesperson confirmed that all of its 155 polling stations had been affected by the blunder but was unable to say how many of the borough's 236,196 registered voters had been turned away.

Green Party mayoral candidate Sian Berry launching her manifesto last month (Getty)

Its Liberal Democrat group was calling for a public inquiry into the voting problems, calling them “an affront to democracy”.

Sian Berry, the Green Party mayoral candidate, said emergency proxy votes alone "would not solve the problem" and called on the council to keep polling stations open for as long as possible.

The Electoral Commission said it received reports of the issue shortly after 7am and believed there was a borough-wide problem causing some names to be missed off electoral lists.

A spokesperson said: "Some polling stations did not have complete registered for people who are eligible to vote. The complete registers were reprinted, checked, and delivered to each polling station."