Lizzie Cundy, Myleene Klass and Emma Bunton kick off the boozy Jubilee parties

Myleene Klass, Lizzie Cundy and Emma Bunton got the party started on Thursday as Bank Holiday celebrations kicked off across the United Kingdom in honour of The Queen‘s milestone Platinum Jubilee.

Street parties will take place up and down the country as boozy Brits make the most of a three-day weekend, capped by a star-studded musical extravaganza outside London’s Buckingham palace on Saturday evening.

And a host of celebrities were evidently keen to make an early start, with radio and TV personality Lizzie, 54, enjoying a knees-up with friends in the back garden of her west London home.

The former WAG was appropriately dressed for the occasion in a regal red gown and raffish tiara as she downed champagne and mingled with guess displaying their Britishness in Union jack suits and dresses.

Here we go: Lizzie Cundy led the celebrity celebrations as Brits up and down the country celebrated The Queen’s Platinum Jubilee on Thursday

Elsewhere former Spice Girl Emma Bunton reminisced about her meeting with The Queen two decades ago, as she celebrated her Golden Jubilee in 2002.

The singer, 46, shared a photo of herself alongside a beaming Her Majesty, taken after her Jubilee performance with The Spice Girls on The Mall.

Captioning the shot, she wrote: ‘The Queen’s Golden Jubilee in 2002 and the pop concert in the garden of Buckingham Palace. That was such an amazing day!’

Bandmate Geri Horner was also in a wistful mood, with the singer sharing her own throwback of a meeting with The Queen during The Spice Girls’ heyday.

‘HRH , our Queen ‘s 7O years of service and inspirational leadership,’ she wrote alongside the image.

Old times: Elsewhere former Spice Girl Emma Bunton reminisced about her meeting with The Queen two decades ago, as she celebrated her Golden Jubilee in 2002

Getting involved: Smooth Radio presenter Myleene Klass used her platform to air an appropriately titled Abba track, before sharing a short video from her studio booth with Instagram followers

Deference: David Beckham also paid tribute to Her Majesty by sharing a handful of images taken throughout her life

Iconic: The former footballer’s posts included images of the Queen during childhood and pictures taken during the early years of her reign as head of state

Looking back: Beckham also fondly remembered one of his own meetings with Her Majesty in 2016 as the country celebrated

Smooth Radio presenter Myleene Klass used her platform to air an appropriately titled Abba track, before sharing a short video from her studio booth with Instagram followers.

Captioning the post, she wrote: God save the (dancing) Queen. Music Royalty for the Jubilee today.’

Former England captain David Beckham posted on Instagram: ‘Today, we celebrate our Queen’s Platinum Jubilee. 70 years of service and inspirational leadership of our country. Let’s come together and commemorate her remarkable reign with a great British party these next few days.’

The retired Manchester United and Real Madrid footballer, 47, accompanied his post with a variety of images taken during The Queen’s life, including one of his own meeting with Her Majesty at her Young Leaders Awards’ in 2016.

Continuing the sporting theme, the England team also joined in by posting a video with Three Lions captain Harry Kane and Lionesses star Leah Williamson thanking the Queen for her 70 years of service.

Kane, 28, said: ‘From me and all of the England team I want to congratulate you on your Platinum Jubilee. Thank you for your incredible 70 years of incredible service.

‘Please enjoy the celebrations this weekend and we all really look forward to the country uniting to celebrate your remarkable achievement.’

This is for you: The sporting theme continued with England skipper Harry Kane thanking the Queen in a special video tribute

Happy Jubes babes: Rylan Clark was also among those to pay tribute as celebrations got underway on Thursday afternoon

Ginger spice: Geri Horner shared a throwback to her meeting with The Queen during The Spice Girls’ heyday

Her Majesty’s a pretty nice girl: The Beatles legend Sir Paul McCartney paid tribute to The Queen by sharing a 1996 photo of their meeting at the opening of the Liverpool Institute for Performing Arts

Rylan Clark’s tribute to The Queen was notably shorter, with the presenter, 33, sharing a photo of his very own personalised Royal case with the accompanying caption: ‘Happy Jubes babes.’

Beatles legend Sir Paul McCartney, 79, admitted Her Majesty was a pretty nice girl in his own post, a 1996 photo of the iconic musician alongside The Queen at the opening of the Liverpool Institute for Performing Arts.

’70 beautiful years of Queen Elizabeth the second. Congrats ma’ am! And thanks – Paul⁣,’ he added in a direct address to the head of state.

Fellow music legend Sir Tom Jones fondly remembered various meetings with The Queen throughout his career, including his first as an up and coming singer in the 1960s.

The veteran star, 81, shared a black and white photo of their first face-to-face alongside a more recent shot of himself greeting The Queen at her Diamond Jubilee celebration in 2012.

Captioning the post, he wrote: ‘Always inspiring, the magnificent Queen Elizabeth II.’

Thanks for everything: Sir Tom Jones shared a photo of himself and The Queen from his days as an up and coming singer in the 1960s

Old friends: He followed it up with a second image of the pair, taken at a later stage in his career

Special occasion: Sir Tom also looked back at this meeting with Her Majesty during the Diamond Jubilee celebrations of 2012

Using one of The Queen’s own quotes alongside a photo of himself and Her Majesty, pop star and West End performer Jason Donovan, 54, wrote: ‘”When life seems hard, the courageous do not lie down and accept defeat; instead, they are all the more determined to struggle for a better future.” Celebrating the Queens Platinum Jubilee 2022.’

Elsewhere opera singer Katherine Jenkins, 41, referenced the special occasion by wearing a red ‘God Save The Queen‘ T-shirt, tucked into a pair of jeans.

The blonde – who is happily married to director husband Andrew Levitas, with whom she raises two children – revealed she is going on voice rest to prepare for the big concert on Friday, when she will sing in front of Her Majesty.

Alongside the photo she wrote: ‘Happy Platty Jubes! On my way to @GMB to talk about this weekend and my concert at Sandringham tomorrow night.

‘Wearing @fundjumpers charity T shirt to get in the mood for this historic celebration but also because they donate 100 school meals to children living in poverty with every jumper sold.’

Looking good: Katherine Jenkins beamed in a red ‘God Save The Queen’ T-shirt before her appearance on Good Morning Britain on Thursday morning ahead of her Jubilee performance

Exciting: The blonde beauty – who is happily married to director husband Andrew Levitas, with whom she raises two children – revealed she is going on voice rest to prepare for the big concert on Friday, when she will sing in front of the Queen

The Duchess of Cambridge and her three children Prince George, Princess Charlotte and Prince Louis waved for cheering crowds at Trooping the Colour on Thursday as they began the Queen’s Platinum Jubilee celebrations in style.

Three carriages left the forecourt of Buckingham Palace carrying members of the Royal Family down The Mall this morning, with the Duchess of Cornwall riding alongside Kate Middleton and her children in the first carriage.

They were followed in the glorious sunshine by the Earl and Countess of Wessex with their son James, Viscount Severn, and finally the Duke and Duchess of Gloucester and Vice Admiral Sir Tim Laurence in the third carriage.

Louis sat between his older siblings George and Charlotte in a carriage, with Kate and Camilla sat opposite. The children, who were dressed in a light blue, navy and white colour scheme, waved to the crowds – and at one point Charlotte appeared to push Louis’s hand down, while the Princess squinted in the sunshine as the carriage left.

Prince Charles, Prince William and Princess Anne rode on horses during the traditional carriage procession which left Buckingham Palace ahead of Trooping the Colour, also known as the Birthday Parade, at the start of festivities.

The Queen’s Birthday Parade at Horse Guards in London is the first official Platinum Jubilee event of the bank holiday weekend, with Her Majesty set to appear on the Buckingham Palace balcony for the RAF flypast at 1pm.

Thousands of people draped in Union Jack flags, party hats and plastic tiaras lined The Mall in the warm sunshine today. Some of those at the front brought camping chairs, having arrived over the past few days to get the best spot, and spirits were high as members of the public chatted and joked with police maintaining the perimeter.

However, police then swooped on four intruders tried to smash through security on The Mall. Two of the protesters – who were from Animal Rebellion – were able to sit in the middle of the road as the marching band approached. Officers hauled them out of the way as the musicians walked by them, avoiding them completely.

The Irish Guards were among the first to arrive at a march at Horse Guards Parade this morning in front of the sitting crowds in the bright sunshine, led by their mascot, an Irish Wolfhound called Seamus.

And as huge crowds descended on the capital to witness the historic weekend, police and park authorities said the areas were full.