Zac Goldsmith's own sister has critcised his London mayoral campaign saying it did not reflect the type of person she knows him to be.

Jemima Goldsmith tweeted that her brother was an "eco-friendly, independent-minded politician with integrity" and his campaign, which has been widely criticised for using "dog-whistle racism", did not reflect this.

Labour candidate Sadiq Khan's victory in the race for City Hall was finally announced just before 12.30am on Saturday morning, following a delay in counting the second preference votes. With all votes allocated, he received a total of 57 per cent, well ahead of Goldsmith's 43 per cent.

She praised Mr Khan as a "great example to young Muslims" - in contrast to her brother's campaign which was accused of being divisive.

Mr Goldsmith has denied claims he ran a racist campaign saying he sincerly believed Mr Khan gave "platform, oxygen and cover to extremists".

Mayor of London vote - Final result graphic

Senior Conservatives have attacked the campaign for attempting to "smear" Mr Khan.

Andrew Boff, Conservative leader in the London Assembly, said the campaign's "outrageous" tactics had "blown up" bridges built with London's Muslim communities in an interview on the BBC's Newsnight on Thursday after the polls had closed.

He said: “I mentioned that I thought this was a mistake for future integration in London. If you are a London politician this is just a bizarre thing to do.

In pictures: Local elections 2016 Show all 10 1 /10 In pictures: Local elections 2016 In pictures: Local elections 2016 Mayor of London Boris Johnson and wife Marina leave after casting their votes at a polling station in Islington, north London PA In pictures: Local elections 2016 Northern Ireland First Minister, Arlene Foster (C), Rhonna McMahon (R) and Paul Robinson leave after casting their vote for the Assembly Election, at Brookeborough Primary School in Enniskillen, Northern Ireland Reuters In pictures: Local elections 2016 Labour party leader Jeremy Corbyn arrives to cast his vote at a polling station in Islington, north London PA In pictures: Local elections 2016 David Cameron and Samantha Cameron cast their votes in the London Mayoral Election in London Getty Images In pictures: Local elections 2016 Labour Party Mayoral candidate Sadiq Khan and his wife Saadiya pose outside The Richardson Hall St Alban's Church Centre in Streatham after casting their votes in London's Mayoral and Assembly elections Getty Images In pictures: Local elections 2016 Britain's Conservative party candidate for Mayor of London Zac Goldsmith and his wife Alice leave after voting at a polling station in the Barnes suburb of south west London AP In pictures: Local elections 2016 George Osborne casts his vote in the London Mayoral Election in London Getty Images In pictures: Local elections 2016 SNP supporter Trish Traynor outside a polling station at St Ninian & Triduana RC Church in Glasgow as the polls open in the Scottish Parliament election PA In pictures: Local elections 2016 Scottish Labour leader Kezia Dugdale (right) with partner Louise Riddell outside a polling station in Edinburgh after casting her vote in the Scottish Parliament election PA In pictures: Local elections 2016 SNP leader Nicola Sturgeon with her husband Peter Murrell after casting her vote at Broomhouse Community Hall polling station in Glasgow as Scotland goes to the polls in the Scottish Parliament election PA

“It was effectively saying that people of conservative religious views are not to be trusted and you shouldn't share a platform with them. That's outrageous.”

Last week, Baroness Sayeeda Warsi criticised Mr Goldsmith after an article he wrote for the Daily Mail attacking Mr Khan's record was published next to an image of a bus destroyed in the 7/7 attacks.

She said: "This is not the Zac Goldsmith I know".

Mr Khan will be the first Muslim mayor of a major European city.

Paris Mayor, Anne Hildalgo congratulated Mr Khan on Twitter saying she was "convinced your humanism and your progressivism will benefit Londoners".

Katie Hopkins, who had vowed to "run naked" down Regent Street with a "sausage" up her bottom if Sadiq Khan won, tweeted suggesting that she would go through with her stunt.